Finding the Fourth Proportional to 1,101.31, 1,651.62 and 370.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.31 : 1,651.62 = 370.72 : x
2. Step 2: Convert to fraction form
   1,101.31/1,651.62 = 370.72/x
3. Step 3: Cross multiply
   1,101.31x = 1,651.62 × 370.72
4. Step 4: Simplify right side
   1,101.31x = 612,288.57
5. Step 5: Solve for x
   x = 612,288.57/1,101.31
6. Step 6: Final answer
   x = 555.96