Finding the Fourth Proportional to 2,669.95, 4,004.61 and 722.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,669.95 : 4,004.61 = 722.31 : x
2. Step 2: Convert to fraction form
   2,669.95/4,004.61 = 722.31/x
3. Step 3: Cross multiply
   2,669.95x = 4,004.61 × 722.31
4. Step 4: Simplify right side
   2,669.95x = 2,892,559.84
5. Step 5: Solve for x
   x = 2,892,559.84/2,669.95
6. Step 6: Final answer
   x = 1,083.38