Finding the Fourth Proportional to 1,288,103.34, 1,777,513.22 and 715,106.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288,103.34 : 1,777,513.22 = 715,106.60 : x
2. Step 2: Convert to fraction form
   1,288,103.34/1,777,513.22 = 715,106.60/x
3. Step 3: Cross multiply
   1,288,103.34x = 1,777,513.22 × 715,106.60
4. Step 4: Simplify right side
   1,288,103.34x = 1,271,111,438,098.39
5. Step 5: Solve for x
   x = 1,271,111,438,098.39/1,288,103.34
6. Step 6: Final answer
   x = 986,808.59