Finding the Fourth Proportional to 2,321.57, 3,483.47 and 1,088.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.57 : 3,483.47 = 1,088.78 : x
2. Step 2: Convert to fraction form
   2,321.57/3,483.47 = 1,088.78/x
3. Step 3: Cross multiply
   2,321.57x = 3,483.47 × 1,088.78
4. Step 4: Simplify right side
   2,321.57x = 3,792,709.61
5. Step 5: Solve for x
   x = 3,792,709.61/2,321.57
6. Step 6: Final answer
   x = 1,633.69