Finding the Fourth Proportional to 3,490.89, 5,240.06 and 1,412.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,490.89 : 5,240.06 = 1,412.25 : x
2. Step 2: Convert to fraction form
   3,490.89/5,240.06 = 1,412.25/x
3. Step 3: Cross multiply
   3,490.89x = 5,240.06 × 1,412.25
4. Step 4: Simplify right side
   3,490.89x = 7,400,267.30
5. Step 5: Solve for x
   x = 7,400,267.30/3,490.89
6. Step 6: Final answer
   x = 2,119.88