Finding the Fourth Proportional to 1,111.74, 1,534.17 and 614.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.74 : 1,534.17 = 614.36 : x
2. Step 2: Convert to fraction form
   1,111.74/1,534.17 = 614.36/x
3. Step 3: Cross multiply
   1,111.74x = 1,534.17 × 614.36
4. Step 4: Simplify right side
   1,111.74x = 942,538.82
5. Step 5: Solve for x
   x = 942,538.82/1,111.74
6. Step 6: Final answer
   x = 847.81