Finding the Fourth Proportional to 1,111.98, 1,534.52 and 614.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.98 : 1,534.52 = 614.63 : x
2. Step 2: Convert to fraction form
   1,111.98/1,534.52 = 614.63/x
3. Step 3: Cross multiply
   1,111.98x = 1,534.52 × 614.63
4. Step 4: Simplify right side
   1,111.98x = 943,151.28
5. Step 5: Solve for x
   x = 943,151.28/1,111.98
6. Step 6: Final answer
   x = 848.17