Finding the Fourth Proportional to 1,158.94, 1,737.69 and 610.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.94 : 1,737.69 = 610.78 : x
2. Step 2: Convert to fraction form
   1,158.94/1,737.69 = 610.78/x
3. Step 3: Cross multiply
   1,158.94x = 1,737.69 × 610.78
4. Step 4: Simplify right side
   1,158.94x = 1,061,346.30
5. Step 5: Solve for x
   x = 1,061,346.30/1,158.94
6. Step 6: Final answer
   x = 915.79