Finding the Fourth Proportional to 2,566.33, 3,541.53 and 1,387.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,566.33 : 3,541.53 = 1,387.40 : x
2. Step 2: Convert to fraction form
   2,566.33/3,541.53 = 1,387.40/x
3. Step 3: Cross multiply
   2,566.33x = 3,541.53 × 1,387.40
4. Step 4: Simplify right side
   2,566.33x = 4,913,518.72
5. Step 5: Solve for x
   x = 4,913,518.72/2,566.33
6. Step 6: Final answer
   x = 1,914.61