Finding the Fourth Proportional to 2,028,838.72, 2,802,713.72 and 1,620,404.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,028,838.72 : 2,802,713.72 = 1,620,404.32 : x
2. Step 2: Convert to fraction form
   2,028,838.72/2,802,713.72 = 1,620,404.32/x
3. Step 3: Cross multiply
   2,028,838.72x = 2,802,713.72 × 1,620,404.32
4. Step 4: Simplify right side
   2,028,838.72x = 4,541,529,419,611.27
5. Step 5: Solve for x
   x = 4,541,529,419,611.27/2,028,838.72
6. Step 6: Final answer
   x = 2,238,487.16