Finding the Fourth Proportional to 2,386,209.72, 3,578,796.18 and 788,394.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386,209.72 : 3,578,796.18 = 788,394.36 : x
2. Step 2: Convert to fraction form
   2,386,209.72/3,578,796.18 = 788,394.36/x
3. Step 3: Cross multiply
   2,386,209.72x = 3,578,796.18 × 788,394.36
4. Step 4: Simplify right side
   2,386,209.72x = 2,821,502,723,901.55
5. Step 5: Solve for x
   x = 2,821,502,723,901.55/2,386,209.72
6. Step 6: Final answer
   x = 1,182,420.26