Finding the Fourth Proportional to 2,312.76, 3,467.52 and 851.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,312.76 : 3,467.52 = 851.72 : x
2. Step 2: Convert to fraction form
   2,312.76/3,467.52 = 851.72/x
3. Step 3: Cross multiply
   2,312.76x = 3,467.52 × 851.72
4. Step 4: Simplify right side
   2,312.76x = 2,953,356.13
5. Step 5: Solve for x
   x = 2,953,356.13/2,312.76
6. Step 6: Final answer
   x = 1,276.98