Finding the Fourth Proportional to 2,439.95, 3,656.73 and 980.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439.95 : 3,656.73 = 980.12 : x
2. Step 2: Convert to fraction form
   2,439.95/3,656.73 = 980.12/x
3. Step 3: Cross multiply
   2,439.95x = 3,656.73 × 980.12
4. Step 4: Simplify right side
   2,439.95x = 3,584,034.21
5. Step 5: Solve for x
   x = 3,584,034.21/2,439.95
6. Step 6: Final answer
   x = 1,468.90