Finding the Fourth Proportional to 2,575.47, 3,860.91 and 1,113.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.47 : 3,860.91 = 1,113.81 : x
2. Step 2: Convert to fraction form
   2,575.47/3,860.91 = 1,113.81/x
3. Step 3: Cross multiply
   2,575.47x = 3,860.91 × 1,113.81
4. Step 4: Simplify right side
   2,575.47x = 4,300,320.17
5. Step 5: Solve for x
   x = 4,300,320.17/2,575.47
6. Step 6: Final answer
   x = 1,669.72