Finding the Fourth Proportional to 1,856.34, 2,560.68 and 1,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.34 : 2,560.68 = 1,156.50 : x
2. Step 2: Convert to fraction form
   1,856.34/2,560.68 = 1,156.50/x
3. Step 3: Cross multiply
   1,856.34x = 2,560.68 × 1,156.50
4. Step 4: Simplify right side
   1,856.34x = 2,961,426.42
5. Step 5: Solve for x
   x = 2,961,426.42/1,856.34
6. Step 6: Final answer
   x = 1,595.30