Finding the Fourth Proportional to 1,856.72, 2,785.10 and 760.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.72 : 2,785.10 = 760.32 : x
2. Step 2: Convert to fraction form
   1,856.72/2,785.10 = 760.32/x
3. Step 3: Cross multiply
   1,856.72x = 2,785.10 × 760.32
4. Step 4: Simplify right side
   1,856.72x = 2,117,567.23
5. Step 5: Solve for x
   x = 2,117,567.23/1,856.72
6. Step 6: Final answer
   x = 1,140.49