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Finding the Fourth Proportional to 1,978.23, 2,966.90 and 882

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Solution

The fourth proportional to 1,978.23, 2,966.90 and 882 is: 1,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978.23 : 2,966.90 = 882 : x
  2. Step 2: Convert to fraction form
    1,978.23/2,966.90 = 882/x
  3. Step 3: Cross multiply
    1,978.23x = 2,966.90 × 882
  4. Step 4: Simplify right side
    1,978.23x = 2,616,801.39
  5. Step 5: Solve for x
    x = 2,616,801.39/1,978.23
  6. Step 6: Final answer
    x = 1,322.80

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