Finding the Fourth Proportional to 1,061.46, 1,590.84 and 574.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.46 : 1,590.84 = 574.92 : x
2. Step 2: Convert to fraction form
   1,061.46/1,590.84 = 574.92/x
3. Step 3: Cross multiply
   1,061.46x = 1,590.84 × 574.92
4. Step 4: Simplify right side
   1,061.46x = 914,605.73
5. Step 5: Solve for x
   x = 914,605.73/1,061.46
6. Step 6: Final answer
   x = 861.65