Finding the Fourth Proportional to 2,257,057.05, 3,114,792.55 and 1,290,277.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,257,057.05 : 3,114,792.55 = 1,290,277.29 : x
2. Step 2: Convert to fraction form
   2,257,057.05/3,114,792.55 = 1,290,277.29/x
3. Step 3: Cross multiply
   2,257,057.05x = 3,114,792.55 × 1,290,277.29
4. Step 4: Simplify right side
   2,257,057.05x = 4,018,946,103,619.51
5. Step 5: Solve for x
   x = 4,018,946,103,619.51/2,257,057.05
6. Step 6: Final answer
   x = 1,780,613.44