Finding the Fourth Proportional to 1,111.61, 1,534.05 and 614.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.61 : 1,534.05 = 614.25 : x
2. Step 2: Convert to fraction form
   1,111.61/1,534.05 = 614.25/x
3. Step 3: Cross multiply
   1,111.61x = 1,534.05 × 614.25
4. Step 4: Simplify right side
   1,111.61x = 942,290.21
5. Step 5: Solve for x
   x = 942,290.21/1,111.61
6. Step 6: Final answer
   x = 847.68