Finding the Fourth Proportional to 2,485.02, 3,722.13 and 1,907.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.02 : 3,722.13 = 1,907.22 : x
2. Step 2: Convert to fraction form
   2,485.02/3,722.13 = 1,907.22/x
3. Step 3: Cross multiply
   2,485.02x = 3,722.13 × 1,907.22
4. Step 4: Simplify right side
   2,485.02x = 7,098,920.78
5. Step 5: Solve for x
   x = 7,098,920.78/2,485.02
6. Step 6: Final answer
   x = 2,856.69