Finding the Fourth Proportional to 1,777.19, 2,452.41 and 980.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.19 : 2,452.41 = 980.47 : x
2. Step 2: Convert to fraction form
   1,777.19/2,452.41 = 980.47/x
3. Step 3: Cross multiply
   1,777.19x = 2,452.41 × 980.47
4. Step 4: Simplify right side
   1,777.19x = 2,404,517.50
5. Step 5: Solve for x
   x = 2,404,517.50/1,777.19
6. Step 6: Final answer
   x = 1,352.99