Finding the Fourth Proportional to 1,111.55, 1,533.83 and 614.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.55 : 1,533.83 = 614.15 : x
2. Step 2: Convert to fraction form
   1,111.55/1,533.83 = 614.15/x
3. Step 3: Cross multiply
   1,111.55x = 1,533.83 × 614.15
4. Step 4: Simplify right side
   1,111.55x = 942,007.06
5. Step 5: Solve for x
   x = 942,007.06/1,111.55
6. Step 6: Final answer
   x = 847.48