Finding the Fourth Proportional to 1,856.43, 2,560.59 and 1,265.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.43 : 2,560.59 = 1,265.94 : x
2. Step 2: Convert to fraction form
   1,856.43/2,560.59 = 1,265.94/x
3. Step 3: Cross multiply
   1,856.43x = 2,560.59 × 1,265.94
4. Step 4: Simplify right side
   1,856.43x = 3,241,553.30
5. Step 5: Solve for x
   x = 3,241,553.30/1,856.43
6. Step 6: Final answer
   x = 1,746.12