Finding the Fourth Proportional to 2,386,123.92, 3,578,427.72 and 788,389.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386,123.92 : 3,578,427.72 = 788,389.20 : x
2. Step 2: Convert to fraction form
   2,386,123.92/3,578,427.72 = 788,389.20/x
3. Step 3: Cross multiply
   2,386,123.92x = 3,578,427.72 × 788,389.20
4. Step 4: Simplify right side
   2,386,123.92x = 2,821,193,767,428.62
5. Step 5: Solve for x
   x = 2,821,193,767,428.62/2,386,123.92
6. Step 6: Final answer
   x = 1,182,333.30