Finding the Fourth Proportional to 2,099,691.78, 2,897,575.38 and 1,228,693.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099,691.78 : 2,897,575.38 = 1,228,693.92 : x
2. Step 2: Convert to fraction form
   2,099,691.78/2,897,575.38 = 1,228,693.92/x
3. Step 3: Cross multiply
   2,099,691.78x = 2,897,575.38 × 1,228,693.92
4. Step 4: Simplify right side
   2,099,691.78x = 3,560,233,252,147.69
5. Step 5: Solve for x
   x = 3,560,233,252,147.69/2,099,691.78
6. Step 6: Final answer
   x = 1,695,598.03