Finding the Fourth Proportional to 2,538.61, 3,804.77 and 1,151.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.61 : 3,804.77 = 1,151.55 : x
2. Step 2: Convert to fraction form
   2,538.61/3,804.77 = 1,151.55/x
3. Step 3: Cross multiply
   2,538.61x = 3,804.77 × 1,151.55
4. Step 4: Simplify right side
   2,538.61x = 4,381,385.77
5. Step 5: Solve for x
   x = 4,381,385.77/2,538.61
6. Step 6: Final answer
   x = 1,725.90