Finding the Fourth Proportional to 2,907,131.61, 4,360,365.25 and 777,381.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,907,131.61 : 4,360,365.25 = 777,381.80 : x
2. Step 2: Convert to fraction form
   2,907,131.61/4,360,365.25 = 777,381.80/x
3. Step 3: Cross multiply
   2,907,131.61x = 4,360,365.25 × 777,381.80
4. Step 4: Simplify right side
   2,907,131.61x = 3,389,668,595,659.91
5. Step 5: Solve for x
   x = 3,389,668,595,659.91/2,907,131.61
6. Step 6: Final answer
   x = 1,165,983.88