Finding the Fourth Proportional to 1,110.72, 1,532.72 and 613.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,110.72 : 1,532.72 = 613.25 : x
2. Step 2: Convert to fraction form
   1,110.72/1,532.72 = 613.25/x
3. Step 3: Cross multiply
   1,110.72x = 1,532.72 × 613.25
4. Step 4: Simplify right side
   1,110.72x = 939,941.31
5. Step 5: Solve for x
   x = 939,941.31/1,110.72
6. Step 6: Final answer
   x = 846.24