Finding the Fourth Proportional to 2,158,042.86, 2,978,099.46 and 1,191,173.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,042.86 : 2,978,099.46 = 1,191,173.52 : x
2. Step 2: Convert to fraction form
   2,158,042.86/2,978,099.46 = 1,191,173.52/x
3. Step 3: Cross multiply
   2,158,042.86x = 2,978,099.46 × 1,191,173.52
4. Step 4: Simplify right side
   2,158,042.86x = 3,547,433,216,678.30
5. Step 5: Solve for x
   x = 3,547,433,216,678.30/2,158,042.86
6. Step 6: Final answer
   x = 1,643,819.63