Finding the Fourth Proportional to 1,499.89, 2,069.21 and 939.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.89 : 2,069.21 = 939.98 : x
2. Step 2: Convert to fraction form
   1,499.89/2,069.21 = 939.98/x
3. Step 3: Cross multiply
   1,499.89x = 2,069.21 × 939.98
4. Step 4: Simplify right side
   1,499.89x = 1,945,000.97
5. Step 5: Solve for x
   x = 1,945,000.97/1,499.89
6. Step 6: Final answer
   x = 1,296.76