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Finding the Fourth Proportional to 1,258.08, 1,886 and 609.26

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Solution

The fourth proportional to 1,258.08, 1,886 and 609.26 is: 913.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.08 : 1,886 = 609.26 : x
  2. Step 2: Convert to fraction form
    1,258.08/1,886 = 609.26/x
  3. Step 3: Cross multiply
    1,258.08x = 1,886 × 609.26
  4. Step 4: Simplify right side
    1,258.08x = 1,149,064.36
  5. Step 5: Solve for x
    x = 1,149,064.36/1,258.08
  6. Step 6: Final answer
    x = 913.35

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