Finding the Fourth Proportional to 1,800.72, 2,484.72 and 1,137.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,800.72 : 2,484.72 = 1,137.60 : x
2. Step 2: Convert to fraction form
   1,800.72/2,484.72 = 1,137.60/x
3. Step 3: Cross multiply
   1,800.72x = 2,484.72 × 1,137.60
4. Step 4: Simplify right side
   1,800.72x = 2,826,617.47
5. Step 5: Solve for x
   x = 2,826,617.47/1,800.72
6. Step 6: Final answer
   x = 1,569.72