Finding the Fourth Proportional to 2,268.96, 3,402.72 and 807.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,268.96 : 3,402.72 = 807.72 : x
2. Step 2: Convert to fraction form
   2,268.96/3,402.72 = 807.72/x
3. Step 3: Cross multiply
   2,268.96x = 3,402.72 × 807.72
4. Step 4: Simplify right side
   2,268.96x = 2,748,445.00
5. Step 5: Solve for x
   x = 2,748,445.00/2,268.96
6. Step 6: Final answer
   x = 1,211.32