Finding the Fourth Proportional to 1,803.88, 2,704.72 and 980.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,803.88 : 2,704.72 = 980.12 : x
2. Step 2: Convert to fraction form
   1,803.88/2,704.72 = 980.12/x
3. Step 3: Cross multiply
   1,803.88x = 2,704.72 × 980.12
4. Step 4: Simplify right side
   1,803.88x = 2,650,950.17
5. Step 5: Solve for x
   x = 2,650,950.17/1,803.88
6. Step 6: Final answer
   x = 1,469.58