Finding the Fourth Proportional to 1,297,669.38, 1,777,777.38 and 1,249,152.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297,669.38 : 1,777,777.38 = 1,249,152.10 : x
2. Step 2: Convert to fraction form
   1,297,669.38/1,777,777.38 = 1,249,152.10/x
3. Step 3: Cross multiply
   1,297,669.38x = 1,777,777.38 × 1,249,152.10
4. Step 4: Simplify right side
   1,297,669.38x = 2,220,714,347,559.50
5. Step 5: Solve for x
   x = 2,220,714,347,559.50/1,297,669.38
6. Step 6: Final answer
   x = 1,711,309.82