Finding the Fourth Proportional to 2,763.86, 4,139.71 and 1,787.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,763.86 : 4,139.71 = 1,787.00 : x
2. Step 2: Convert to fraction form
   2,763.86/4,139.71 = 1,787.00/x
3. Step 3: Cross multiply
   2,763.86x = 4,139.71 × 1,787.00
4. Step 4: Simplify right side
   2,763.86x = 7,397,636.60
5. Step 5: Solve for x
   x = 7,397,636.60/2,763.86
6. Step 6: Final answer
   x = 2,676.56