Finding the Fourth Proportional to 1,321,225.35, 1,823,300.15 and 717,613.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,225.35 : 1,823,300.15 = 717,613.35 : x
2. Step 2: Convert to fraction form
   1,321,225.35/1,823,300.15 = 717,613.35/x
3. Step 3: Cross multiply
   1,321,225.35x = 1,823,300.15 × 717,613.35
4. Step 4: Simplify right side
   1,321,225.35x = 1,308,424,525,108.94
5. Step 5: Solve for x
   x = 1,308,424,525,108.94/1,321,225.35
6. Step 6: Final answer
   x = 990,311.40