Finding the Fourth Proportional to 1,105.17, 1,656.72 and 374.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.17 : 1,656.72 = 374.24 : x
2. Step 2: Convert to fraction form
   1,105.17/1,656.72 = 374.24/x
3. Step 3: Cross multiply
   1,105.17x = 1,656.72 × 374.24
4. Step 4: Simplify right side
   1,105.17x = 620,000.74
5. Step 5: Solve for x
   x = 620,000.74/1,105.17
6. Step 6: Final answer
   x = 561.00