Finding the Fourth Proportional to 2,143.82, 2,958.06 and 1,259.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.82 : 2,958.06 = 1,259.30 : x
2. Step 2: Convert to fraction form
   2,143.82/2,958.06 = 1,259.30/x
3. Step 3: Cross multiply
   2,143.82x = 2,958.06 × 1,259.30
4. Step 4: Simplify right side
   2,143.82x = 3,725,084.96
5. Step 5: Solve for x
   x = 3,725,084.96/2,143.82
6. Step 6: Final answer
   x = 1,737.59