Finding the Fourth Proportional to 1,731.87, 2,591.01 and 1,338.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,731.87 : 2,591.01 = 1,338.89 : x
2. Step 2: Convert to fraction form
   1,731.87/2,591.01 = 1,338.89/x
3. Step 3: Cross multiply
   1,731.87x = 2,591.01 × 1,338.89
4. Step 4: Simplify right side
   1,731.87x = 3,469,064.42
5. Step 5: Solve for x
   x = 3,469,064.42/1,731.87
6. Step 6: Final answer
   x = 2,003.07