Finding the Fourth Proportional to 1,153.95, 1,592.56 and 656.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.95 : 1,592.56 = 656.61 : x
2. Step 2: Convert to fraction form
   1,153.95/1,592.56 = 656.61/x
3. Step 3: Cross multiply
   1,153.95x = 1,592.56 × 656.61
4. Step 4: Simplify right side
   1,153.95x = 1,045,685.67
5. Step 5: Solve for x
   x = 1,045,685.67/1,153.95
6. Step 6: Final answer
   x = 906.18