Finding the Fourth Proportional to 2,078,772.10, 3,120,782.55 and 1,119,991.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078,772.10 : 3,120,782.55 = 1,119,991.30 : x
2. Step 2: Convert to fraction form
   2,078,772.10/3,120,782.55 = 1,119,991.30/x
3. Step 3: Cross multiply
   2,078,772.10x = 3,120,782.55 × 1,119,991.30
4. Step 4: Simplify right side
   2,078,772.10x = 3,495,249,305,191.82
5. Step 5: Solve for x
   x = 3,495,249,305,191.82/2,078,772.10
6. Step 6: Final answer
   x = 1,681,400.91