Finding the Fourth Proportional to 2,980.24, 4,470.72 and 1,225.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,980.24 : 4,470.72 = 1,225.84 : x
2. Step 2: Convert to fraction form
   2,980.24/4,470.72 = 1,225.84/x
3. Step 3: Cross multiply
   2,980.24x = 4,470.72 × 1,225.84
4. Step 4: Simplify right side
   2,980.24x = 5,480,387.40
5. Step 5: Solve for x
   x = 5,480,387.40/2,980.24
6. Step 6: Final answer
   x = 1,838.91