Finding the Fourth Proportional to 1,093.71, 1,641.50 and 477.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.71 : 1,641.50 = 477.91 : x
2. Step 2: Convert to fraction form
   1,093.71/1,641.50 = 477.91/x
3. Step 3: Cross multiply
   1,093.71x = 1,641.50 × 477.91
4. Step 4: Simplify right side
   1,093.71x = 784,489.27
5. Step 5: Solve for x
   x = 784,489.27/1,093.71
6. Step 6: Final answer
   x = 717.27