Finding the Fourth Proportional to 2,020,640.98, 2,788,478.84 and 1,115,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020,640.98 : 2,788,478.84 = 1,115,216.50 : x
2. Step 2: Convert to fraction form
   2,020,640.98/2,788,478.84 = 1,115,216.50/x
3. Step 3: Cross multiply
   2,020,640.98x = 2,788,478.84 × 1,115,216.50
4. Step 4: Simplify right side
   2,020,640.98x = 3,109,757,612,268.86
5. Step 5: Solve for x
   x = 3,109,757,612,268.86/2,020,640.98
6. Step 6: Final answer
   x = 1,538,995.62