Finding the Fourth Proportional to 1,499.78, 2,251.26 and 980.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.78 : 2,251.26 = 980.82 : x
2. Step 2: Convert to fraction form
   1,499.78/2,251.26 = 980.82/x
3. Step 3: Cross multiply
   1,499.78x = 2,251.26 × 980.82
4. Step 4: Simplify right side
   1,499.78x = 2,208,080.83
5. Step 5: Solve for x
   x = 2,208,080.83/1,499.78
6. Step 6: Final answer
   x = 1,472.27