Finding the Fourth Proportional to 1,856.31, 2,784.45 and 760.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.31 : 2,784.45 = 760.67 : x
2. Step 2: Convert to fraction form
   1,856.31/2,784.45 = 760.67/x
3. Step 3: Cross multiply
   1,856.31x = 2,784.45 × 760.67
4. Step 4: Simplify right side
   1,856.31x = 2,118,057.40
5. Step 5: Solve for x
   x = 2,118,057.40/1,856.31
6. Step 6: Final answer
   x = 1,141.00