Finding the Fourth Proportional to 1,111.81, 1,534.22 and 614.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.81 : 1,534.22 = 614.46 : x
2. Step 2: Convert to fraction form
   1,111.81/1,534.22 = 614.46/x
3. Step 3: Cross multiply
   1,111.81x = 1,534.22 × 614.46
4. Step 4: Simplify right side
   1,111.81x = 942,716.82
5. Step 5: Solve for x
   x = 942,716.82/1,111.81
6. Step 6: Final answer
   x = 847.91