Finding the Fourth Proportional to 1,110.59, 1,532.61 and 613.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,110.59 : 1,532.61 = 613.30 : x
2. Step 2: Convert to fraction form
   1,110.59/1,532.61 = 613.30/x
3. Step 3: Cross multiply
   1,110.59x = 1,532.61 × 613.30
4. Step 4: Simplify right side
   1,110.59x = 939,948.43
5. Step 5: Solve for x
   x = 939,948.43/1,110.59
6. Step 6: Final answer
   x = 846.35