Finding the Fourth Proportional to 2,485.56, 3,720.12 and 1,506.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.56 : 3,720.12 = 1,506.90 : x
2. Step 2: Convert to fraction form
   2,485.56/3,720.12 = 1,506.90/x
3. Step 3: Cross multiply
   2,485.56x = 3,720.12 × 1,506.90
4. Step 4: Simplify right side
   2,485.56x = 5,605,848.83
5. Step 5: Solve for x
   x = 5,605,848.83/2,485.56
6. Step 6: Final answer
   x = 2,255.37