Finding the Fourth Proportional to 1,126,875.30, 1,554,915.87 and 636,665.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,126,875.30 : 1,554,915.87 = 636,665.94 : x
2. Step 2: Convert to fraction form
   1,126,875.30/1,554,915.87 = 636,665.94/x
3. Step 3: Cross multiply
   1,126,875.30x = 1,554,915.87 × 636,665.94
4. Step 4: Simplify right side
   1,126,875.30x = 989,961,973,994.47
5. Step 5: Solve for x
   x = 989,961,973,994.47/1,126,875.30
6. Step 6: Final answer
   x = 878,501.80