Finding the Fourth Proportional to 1,434,978.48, 2,150,990.82 and 636,636

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,978.48 : 2,150,990.82 = 636,636 : x
2. Step 2: Convert to fraction form
   1,434,978.48/2,150,990.82 = 636,636/x
3. Step 3: Cross multiply
   1,434,978.48x = 2,150,990.82 × 636,636
4. Step 4: Simplify right side
   1,434,978.48x = 1,369,398,191,681.52
5. Step 5: Solve for x
   x = 1,369,398,191,681.52/1,434,978.48
6. Step 6: Final answer
   x = 954,298.77