Finding the Fourth Proportional to 1,111.89, 1,534.43 and 614.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.89 : 1,534.43 = 614.57 : x
2. Step 2: Convert to fraction form
   1,111.89/1,534.43 = 614.57/x
3. Step 3: Cross multiply
   1,111.89x = 1,534.43 × 614.57
4. Step 4: Simplify right side
   1,111.89x = 943,015.41
5. Step 5: Solve for x
   x = 943,015.41/1,111.89
6. Step 6: Final answer
   x = 848.12