Finding the Fourth Proportional to 2,157,789.86, 2,977,735.32 and 1,190,920.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,157,789.86 : 2,977,735.32 = 1,190,920.16 : x
2. Step 2: Convert to fraction form
   2,157,789.86/2,977,735.32 = 1,190,920.16/x
3. Step 3: Cross multiply
   2,157,789.86x = 2,977,735.32 × 1,190,920.16
4. Step 4: Simplify right side
   2,157,789.86x = 3,546,245,023,732.05
5. Step 5: Solve for x
   x = 3,546,245,023,732.05/2,157,789.86
6. Step 6: Final answer
   x = 1,643,461.71