Finding the Fourth Proportional to 1,158.59, 1,735.83 and 611.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.59 : 1,735.83 = 611.15 : x
2. Step 2: Convert to fraction form
   1,158.59/1,735.83 = 611.15/x
3. Step 3: Cross multiply
   1,158.59x = 1,735.83 × 611.15
4. Step 4: Simplify right side
   1,158.59x = 1,060,843.83
5. Step 5: Solve for x
   x = 1,060,843.83/1,158.59
6. Step 6: Final answer
   x = 915.64