Finding the Fourth Proportional to 1,288,103.82, 1,777,513.88 and 715,107.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288,103.82 : 1,777,513.88 = 715,107.08 : x
2. Step 2: Convert to fraction form
   1,288,103.82/1,777,513.88 = 715,107.08/x
3. Step 3: Cross multiply
   1,288,103.82x = 1,777,513.88 × 715,107.08
4. Step 4: Simplify right side
   1,288,103.82x = 1,271,112,766,617.82
5. Step 5: Solve for x
   x = 1,271,112,766,617.82/1,288,103.82
6. Step 6: Final answer
   x = 986,809.25