Finding the Fourth Proportional to 1,112.37, 1,535.06 and 615.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.37 : 1,535.06 = 615.00 : x
2. Step 2: Convert to fraction form
   1,112.37/1,535.06 = 615.00/x
3. Step 3: Cross multiply
   1,112.37x = 1,535.06 × 615.00
4. Step 4: Simplify right side
   1,112.37x = 944,064.20
5. Step 5: Solve for x
   x = 944,064.20/1,112.37
6. Step 6: Final answer
   x = 848.69