Finding the Fourth Proportional to 2,106,426.72, 2,906,856.90 and 1,139,554.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106,426.72 : 2,906,856.90 = 1,139,554.20 : x
2. Step 2: Convert to fraction form
   2,106,426.72/2,906,856.90 = 1,139,554.20/x
3. Step 3: Cross multiply
   2,106,426.72x = 2,906,856.90 × 1,139,554.20
4. Step 4: Simplify right side
   2,106,426.72x = 3,312,520,989,193.98
5. Step 5: Solve for x
   x = 3,312,520,989,193.98/2,106,426.72
6. Step 6: Final answer
   x = 1,572,578.32