Finding the Fourth Proportional to 1,447.50, 1,999.17 and 980.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.50 : 1,999.17 = 980.94 : x
2. Step 2: Convert to fraction form
   1,447.50/1,999.17 = 980.94/x
3. Step 3: Cross multiply
   1,447.50x = 1,999.17 × 980.94
4. Step 4: Simplify right side
   1,447.50x = 1,961,065.82
5. Step 5: Solve for x
   x = 1,961,065.82/1,447.50
6. Step 6: Final answer
   x = 1,354.80