Finding the Fourth Proportional to 1,152,783.50, 1,590,845.67 and 636,528.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,783.50 : 1,590,845.67 = 636,528.78 : x
2. Step 2: Convert to fraction form
   1,152,783.50/1,590,845.67 = 636,528.78/x
3. Step 3: Cross multiply
   1,152,783.50x = 1,590,845.67 × 636,528.78
4. Step 4: Simplify right side
   1,152,783.50x = 1,012,619,053,493.38
5. Step 5: Solve for x
   x = 1,012,619,053,493.38/1,152,783.50
6. Step 6: Final answer
   x = 878,412.17