Finding the Fourth Proportional to 2,802.86, 4,218.90 and 2,380.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,802.86 : 4,218.90 = 2,380.04 : x
2. Step 2: Convert to fraction form
   2,802.86/4,218.90 = 2,380.04/x
3. Step 3: Cross multiply
   2,802.86x = 4,218.90 × 2,380.04
4. Step 4: Simplify right side
   2,802.86x = 10,041,150.76
5. Step 5: Solve for x
   x = 10,041,150.76/2,802.86
6. Step 6: Final answer
   x = 3,582.47