Finding the Fourth Proportional to 2,688,048.55, 4,031,436.16 and 768,900.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688,048.55 : 4,031,436.16 = 768,900.70 : x
2. Step 2: Convert to fraction form
   2,688,048.55/4,031,436.16 = 768,900.70/x
3. Step 3: Cross multiply
   2,688,048.55x = 4,031,436.16 × 768,900.70
4. Step 4: Simplify right side
   2,688,048.55x = 3,099,774,085,429.31
5. Step 5: Solve for x
   x = 3,099,774,085,429.31/2,688,048.55
6. Step 6: Final answer
   x = 1,153,168.94