Finding the Fourth Proportional to 1,030.71, 1,545.16 and 620.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030.71 : 1,545.16 = 620.04 : x
2. Step 2: Convert to fraction form
   1,030.71/1,545.16 = 620.04/x
3. Step 3: Cross multiply
   1,030.71x = 1,545.16 × 620.04
4. Step 4: Simplify right side
   1,030.71x = 958,061.01
5. Step 5: Solve for x
   x = 958,061.01/1,030.71
6. Step 6: Final answer
   x = 929.52