Finding the Fourth Proportional to 1,856.56, 2,561.32 and 1,156.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.56 : 2,561.32 = 1,156.72 : x
2. Step 2: Convert to fraction form
   1,856.56/2,561.32 = 1,156.72/x
3. Step 3: Cross multiply
   1,856.56x = 2,561.32 × 1,156.72
4. Step 4: Simplify right side
   1,856.56x = 2,962,730.07
5. Step 5: Solve for x
   x = 2,962,730.07/1,856.56
6. Step 6: Final answer
   x = 1,595.82