Finding the Fourth Proportional to 2,167,434.87, 2,991,158.58 and 1,200,565.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167,434.87 : 2,991,158.58 = 1,200,565.05 : x
2. Step 2: Convert to fraction form
   2,167,434.87/2,991,158.58 = 1,200,565.05/x
3. Step 3: Cross multiply
   2,167,434.87x = 2,991,158.58 × 1,200,565.05
4. Step 4: Simplify right side
   2,167,434.87x = 3,591,080,450,155.63
5. Step 5: Solve for x
   x = 3,591,080,450,155.63/2,167,434.87
6. Step 6: Final answer
   x = 1,656,834.31