Finding the Fourth Proportional to 1,061.16, 1,592.46 and 411.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.16 : 1,592.46 = 411.81 : x
2. Step 2: Convert to fraction form
   1,061.16/1,592.46 = 411.81/x
3. Step 3: Cross multiply
   1,061.16x = 1,592.46 × 411.81
4. Step 4: Simplify right side
   1,061.16x = 655,790.95
5. Step 5: Solve for x
   x = 655,790.95/1,061.16
6. Step 6: Final answer
   x = 617.99