Finding the Fourth Proportional to 2,105,690.83, 2,905,853.35 and 1,138,821.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,690.83 : 2,905,853.35 = 1,138,821.12 : x
2. Step 2: Convert to fraction form
   2,105,690.83/2,905,853.35 = 1,138,821.12/x
3. Step 3: Cross multiply
   2,105,690.83x = 2,905,853.35 × 1,138,821.12
4. Step 4: Simplify right side
   2,105,690.83x = 3,309,247,166,602.75
5. Step 5: Solve for x
   x = 3,309,247,166,602.75/2,105,690.83
6. Step 6: Final answer
   x = 1,571,573.15