Finding the Fourth Proportional to 2,639,628.05, 3,642,686.70 and 1,432,404.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639,628.05 : 3,642,686.70 = 1,432,404.05 : x
2. Step 2: Convert to fraction form
   2,639,628.05/3,642,686.70 = 1,432,404.05/x
3. Step 3: Cross multiply
   2,639,628.05x = 3,642,686.70 × 1,432,404.05
4. Step 4: Simplify right side
   2,639,628.05x = 5,217,799,181,961.14
5. Step 5: Solve for x
   x = 5,217,799,181,961.14/2,639,628.05
6. Step 6: Final answer
   x = 1,976,717.58