Finding the Fourth Proportional to 1,016,042.77, 1,521,074.47 and 678,245.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016,042.77 : 1,521,074.47 = 678,245.59 : x
2. Step 2: Convert to fraction form
   1,016,042.77/1,521,074.47 = 678,245.59/x
3. Step 3: Cross multiply
   1,016,042.77x = 1,521,074.47 × 678,245.59
4. Step 4: Simplify right side
   1,016,042.77x = 1,031,662,051,339.09
5. Step 5: Solve for x
   x = 1,031,662,051,339.09/1,016,042.77
6. Step 6: Final answer
   x = 1,015,372.66