Finding the Fourth Proportional to 1,111.80, 1,534.32 and 614.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.80 : 1,534.32 = 614.49 : x
2. Step 2: Convert to fraction form
   1,111.80/1,534.32 = 614.49/x
3. Step 3: Cross multiply
   1,111.80x = 1,534.32 × 614.49
4. Step 4: Simplify right side
   1,111.80x = 942,816.81
5. Step 5: Solve for x
   x = 942,816.81/1,111.80
6. Step 6: Final answer
   x = 848.01