Finding the Fourth Proportional to 1,086.62, 1,628.58 and 469.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.62 : 1,628.58 = 469.02 : x
2. Step 2: Convert to fraction form
   1,086.62/1,628.58 = 469.02/x
3. Step 3: Cross multiply
   1,086.62x = 1,628.58 × 469.02
4. Step 4: Simplify right side
   1,086.62x = 763,836.59
5. Step 5: Solve for x
   x = 763,836.59/1,086.62
6. Step 6: Final answer
   x = 702.95