Finding the Fourth Proportional to 1,217,148.88, 1,679,099.88 and 787,567.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,217,148.88 : 1,679,099.88 = 787,567.56 : x
2. Step 2: Convert to fraction form
   1,217,148.88/1,679,099.88 = 787,567.56/x
3. Step 3: Cross multiply
   1,217,148.88x = 1,679,099.88 × 787,567.56
4. Step 4: Simplify right side
   1,217,148.88x = 1,322,404,595,487.89
5. Step 5: Solve for x
   x = 1,322,404,595,487.89/1,217,148.88
6. Step 6: Final answer
   x = 1,086,477.27