Finding the Fourth Proportional to 2,105,709.62, 2,905,879.28 and 1,138,839.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,709.62 : 2,905,879.28 = 1,138,839.91 : x
2. Step 2: Convert to fraction form
   2,105,709.62/2,905,879.28 = 1,138,839.91/x
3. Step 3: Cross multiply
   2,105,709.62x = 2,905,879.28 × 1,138,839.91
4. Step 4: Simplify right side
   2,105,709.62x = 3,309,331,297,706.06
5. Step 5: Solve for x
   x = 3,309,331,297,706.06/2,105,709.62
6. Step 6: Final answer
   x = 1,571,599.08