Finding the Fourth Proportional to 1,105.02, 1,656.15 and 557.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.02 : 1,656.15 = 557.34 : x
2. Step 2: Convert to fraction form
   1,105.02/1,656.15 = 557.34/x
3. Step 3: Cross multiply
   1,105.02x = 1,656.15 × 557.34
4. Step 4: Simplify right side
   1,105.02x = 923,038.64
5. Step 5: Solve for x
   x = 923,038.64/1,105.02
6. Step 6: Final answer
   x = 835.31