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Finding the Fourth Proportional to 978.72, 1,461.08 and 944.52

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Solution

The fourth proportional to 978.72, 1,461.08 and 944.52 is: 1,410.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    978.72 : 1,461.08 = 944.52 : x
  2. Step 2: Convert to fraction form
    978.72/1,461.08 = 944.52/x
  3. Step 3: Cross multiply
    978.72x = 1,461.08 × 944.52
  4. Step 4: Simplify right side
    978.72x = 1,380,019.28
  5. Step 5: Solve for x
    x = 1,380,019.28/978.72
  6. Step 6: Final answer
    x = 1,410.02

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