Finding the Fourth Proportional to 2,585,196.86, 3,878,376.78 and 788,261.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,585,196.86 : 3,878,376.78 = 788,261.98 : x
2. Step 2: Convert to fraction form
   2,585,196.86/3,878,376.78 = 788,261.98/x
3. Step 3: Cross multiply
   2,585,196.86x = 3,878,376.78 × 788,261.98
4. Step 4: Simplify right side
   2,585,196.86x = 3,057,176,959,788.82
5. Step 5: Solve for x
   x = 3,057,176,959,788.82/2,585,196.86
6. Step 6: Final answer
   x = 1,182,570.27