Finding the Fourth Proportional to 2,978.88, 4,469.28 and 1,247.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.88 : 4,469.28 = 1,247.04 : x
2. Step 2: Convert to fraction form
   2,978.88/4,469.28 = 1,247.04/x
3. Step 3: Cross multiply
   2,978.88x = 4,469.28 × 1,247.04
4. Step 4: Simplify right side
   2,978.88x = 5,573,370.93
5. Step 5: Solve for x
   x = 5,573,370.93/2,978.88
6. Step 6: Final answer
   x = 1,870.96