Finding the Fourth Proportional to 2,159,017.30, 3,236,452.35 and 1,678,978.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159,017.30 : 3,236,452.35 = 1,678,978.90 : x
2. Step 2: Convert to fraction form
   2,159,017.30/3,236,452.35 = 1,678,978.90/x
3. Step 3: Cross multiply
   2,159,017.30x = 3,236,452.35 × 1,678,978.90
4. Step 4: Simplify right side
   2,159,017.30x = 5,433,935,206,505.42
5. Step 5: Solve for x
   x = 5,433,935,206,505.42/2,159,017.30
6. Step 6: Final answer
   x = 2,516,855.80