Finding the Fourth Proportional to 4,978.17, 7,469.69 and 2,380.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.17 : 7,469.69 = 2,380.50 : x
2. Step 2: Convert to fraction form
   4,978.17/7,469.69 = 2,380.50/x
3. Step 3: Cross multiply
   4,978.17x = 7,469.69 × 2,380.50
4. Step 4: Simplify right side
   4,978.17x = 17,781,585.14
5. Step 5: Solve for x
   x = 17,781,585.14/4,978.17
6. Step 6: Final answer
   x = 3,571.91