Finding the Fourth Proportional to 1,315,721.34, 1,815,700.98 and 712,109.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,315,721.34 : 1,815,700.98 = 712,109.34 : x
2. Step 2: Convert to fraction form
   1,315,721.34/1,815,700.98 = 712,109.34/x
3. Step 3: Cross multiply
   1,315,721.34x = 1,815,700.98 × 712,109.34
4. Step 4: Simplify right side
   1,315,721.34x = 1,292,977,626,505.15
5. Step 5: Solve for x
   x = 1,292,977,626,505.15/1,315,721.34
6. Step 6: Final answer
   x = 982,713.88