Finding the Fourth Proportional to 2,359.78, 3,540.48 and 1,061.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.78 : 3,540.48 = 1,061.80 : x
2. Step 2: Convert to fraction form
   2,359.78/3,540.48 = 1,061.80/x
3. Step 3: Cross multiply
   2,359.78x = 3,540.48 × 1,061.80
4. Step 4: Simplify right side
   2,359.78x = 3,759,281.66
5. Step 5: Solve for x
   x = 3,759,281.66/2,359.78
6. Step 6: Final answer
   x = 1,593.06