Finding the Fourth Proportional to 2,279,791.42, 3,145,696.22 and 1,299,688.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279,791.42 : 3,145,696.22 = 1,299,688.72 : x
2. Step 2: Convert to fraction form
   2,279,791.42/3,145,696.22 = 1,299,688.72/x
3. Step 3: Cross multiply
   2,279,791.42x = 3,145,696.22 × 1,299,688.72
4. Step 4: Simplify right side
   2,279,791.42x = 4,088,425,889,065.62
5. Step 5: Solve for x
   x = 4,088,425,889,065.62/2,279,791.42
6. Step 6: Final answer
   x = 1,793,333.31