Finding the Fourth Proportional to 1,105.88, 1,655.31 and 617.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.88 : 1,655.31 = 617.45 : x
2. Step 2: Convert to fraction form
   1,105.88/1,655.31 = 617.45/x
3. Step 3: Cross multiply
   1,105.88x = 1,655.31 × 617.45
4. Step 4: Simplify right side
   1,105.88x = 1,022,071.16
5. Step 5: Solve for x
   x = 1,022,071.16/1,105.88
6. Step 6: Final answer
   x = 924.22