Finding the Fourth Proportional to 1,152,363, 1,590,348.99 and 636,216.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,363 : 1,590,348.99 = 636,216.31 : x
2. Step 2: Convert to fraction form
   1,152,363/1,590,348.99 = 636,216.31/x
3. Step 3: Cross multiply
   1,152,363x = 1,590,348.99 × 636,216.31
4. Step 4: Simplify right side
   1,152,363x = 1,011,805,962,054.15
5. Step 5: Solve for x
   x = 1,011,805,962,054.15/1,152,363
6. Step 6: Final answer
   x = 878,027.12