Finding the Fourth Proportional to 1,145,443.25, 1,580,711.69 and 636,193.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145,443.25 : 1,580,711.69 = 636,193.01 : x
2. Step 2: Convert to fraction form
   1,145,443.25/1,580,711.69 = 636,193.01/x
3. Step 3: Cross multiply
   1,145,443.25x = 1,580,711.69 × 636,193.01
4. Step 4: Simplify right side
   1,145,443.25x = 1,005,637,728,003.29
5. Step 5: Solve for x
   x = 1,005,637,728,003.29/1,145,443.25
6. Step 6: Final answer
   x = 877,946.36