Finding the Fourth Proportional to 1,759.31, 2,428.24 and 1,013.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,759.31 : 2,428.24 = 1,013.40 : x
2. Step 2: Convert to fraction form
   1,759.31/2,428.24 = 1,013.40/x
3. Step 3: Cross multiply
   1,759.31x = 2,428.24 × 1,013.40
4. Step 4: Simplify right side
   1,759.31x = 2,460,778.42
5. Step 5: Solve for x
   x = 2,460,778.42/1,759.31
6. Step 6: Final answer
   x = 1,398.72