Finding the Fourth Proportional to 1,854.72, 2,783.12 and 758.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,854.72 : 2,783.12 = 758.92 : x
2. Step 2: Convert to fraction form
   1,854.72/2,783.12 = 758.92/x
3. Step 3: Cross multiply
   1,854.72x = 2,783.12 × 758.92
4. Step 4: Simplify right side
   1,854.72x = 2,112,165.43
5. Step 5: Solve for x
   x = 2,112,165.43/1,854.72
6. Step 6: Final answer
   x = 1,138.81