Finding the Fourth Proportional to 1,892.83, 2,836.85 and 851.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,892.83 : 2,836.85 = 851.72 : x
2. Step 2: Convert to fraction form
   1,892.83/2,836.85 = 851.72/x
3. Step 3: Cross multiply
   1,892.83x = 2,836.85 × 851.72
4. Step 4: Simplify right side
   1,892.83x = 2,416,201.88
5. Step 5: Solve for x
   x = 2,416,201.88/1,892.83
6. Step 6: Final answer
   x = 1,276.50