Finding the Fourth Proportional to 1,856.52, 2,784.42 and 931.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.52 : 2,784.42 = 931.83 : x
2. Step 2: Convert to fraction form
   1,856.52/2,784.42 = 931.83/x
3. Step 3: Cross multiply
   1,856.52x = 2,784.42 × 931.83
4. Step 4: Simplify right side
   1,856.52x = 2,594,606.09
5. Step 5: Solve for x
   x = 2,594,606.09/1,856.52
6. Step 6: Final answer
   x = 1,397.56