Finding the Fourth Proportional to 1,469.35, 2,200.78 and 980.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,469.35 : 2,200.78 = 980.11 : x
2. Step 2: Convert to fraction form
   1,469.35/2,200.78 = 980.11/x
3. Step 3: Cross multiply
   1,469.35x = 2,200.78 × 980.11
4. Step 4: Simplify right side
   1,469.35x = 2,156,990.58
5. Step 5: Solve for x
   x = 2,156,990.58/1,469.35
6. Step 6: Final answer
   x = 1,467.99