Finding the Fourth Proportional to 1,477.71, 2,039.34 and 980.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,477.71 : 2,039.34 = 980.00 : x
2. Step 2: Convert to fraction form
   1,477.71/2,039.34 = 980.00/x
3. Step 3: Cross multiply
   1,477.71x = 2,039.34 × 980.00
4. Step 4: Simplify right side
   1,477.71x = 1,998,554.33
5. Step 5: Solve for x
   x = 1,998,554.33/1,477.71
6. Step 6: Final answer
   x = 1,352.47