Finding the Fourth Proportional to 2,359.72, 3,540.93 and 1,386.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.72 : 3,540.93 = 1,386.50 : x
2. Step 2: Convert to fraction form
   2,359.72/3,540.93 = 1,386.50/x
3. Step 3: Cross multiply
   2,359.72x = 3,540.93 × 1,386.50
4. Step 4: Simplify right side
   2,359.72x = 4,909,499.45
5. Step 5: Solve for x
   x = 4,909,499.45/2,359.72
6. Step 6: Final answer
   x = 2,080.55