Finding the Fourth Proportional to 1,158.10, 1,738.16 and 610.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.10 : 1,738.16 = 610.67 : x
2. Step 2: Convert to fraction form
   1,158.10/1,738.16 = 610.67/x
3. Step 3: Cross multiply
   1,158.10x = 1,738.16 × 610.67
4. Step 4: Simplify right side
   1,158.10x = 1,061,442.17
5. Step 5: Solve for x
   x = 1,061,442.17/1,158.10
6. Step 6: Final answer
   x = 916.54