Finding the Fourth Proportional to 1,776.72, 2,451.93 and 980.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.72 : 2,451.93 = 980.10 : x
2. Step 2: Convert to fraction form
   1,776.72/2,451.93 = 980.10/x
3. Step 3: Cross multiply
   1,776.72x = 2,451.93 × 980.10
4. Step 4: Simplify right side
   1,776.72x = 2,403,136.59
5. Step 5: Solve for x
   x = 2,403,136.59/1,776.72
6. Step 6: Final answer
   x = 1,352.57