Finding the Fourth Proportional to 2,638,815.32, 3,641,572.20 and 1,431,591.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638,815.32 : 3,641,572.20 = 1,431,591.32 : x
2. Step 2: Convert to fraction form
   2,638,815.32/3,641,572.20 = 1,431,591.32/x
3. Step 3: Cross multiply
   2,638,815.32x = 3,641,572.20 × 1,431,591.32
4. Step 4: Simplify right side
   2,638,815.32x = 5,213,243,152,673.31
5. Step 5: Solve for x
   x = 5,213,243,152,673.31/2,638,815.32
6. Step 6: Final answer
   x = 1,975,599.85