Finding the Fourth Proportional to 2,106,300.75, 2,906,686.22 and 1,139,428.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106,300.75 : 2,906,686.22 = 1,139,428.63 : x
2. Step 2: Convert to fraction form
   2,106,300.75/2,906,686.22 = 1,139,428.63/x
3. Step 3: Cross multiply
   2,106,300.75x = 2,906,686.22 × 1,139,428.63
4. Step 4: Simplify right side
   2,106,300.75x = 3,311,961,497,494.48
5. Step 5: Solve for x
   x = 3,311,961,497,494.48/2,106,300.75
6. Step 6: Final answer
   x = 1,572,406.74