Finding the Fourth Proportional to 1,111.47, 1,533.79 and 614.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.47 : 1,533.79 = 614.11 : x
2. Step 2: Convert to fraction form
   1,111.47/1,533.79 = 614.11/x
3. Step 3: Cross multiply
   1,111.47x = 1,533.79 × 614.11
4. Step 4: Simplify right side
   1,111.47x = 941,915.78
5. Step 5: Solve for x
   x = 941,915.78/1,111.47
6. Step 6: Final answer
   x = 847.45