Finding the Fourth Proportional to 2,613.48, 3,921.84 and 1,153.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.48 : 3,921.84 = 1,153.86 : x
2. Step 2: Convert to fraction form
   2,613.48/3,921.84 = 1,153.86/x
3. Step 3: Cross multiply
   2,613.48x = 3,921.84 × 1,153.86
4. Step 4: Simplify right side
   2,613.48x = 4,525,254.30
5. Step 5: Solve for x
   x = 4,525,254.30/2,613.48
6. Step 6: Final answer
   x = 1,731.51