Finding the Fourth Proportional to 2,507.25, 3,459.98 and 1,388.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.25 : 3,459.98 = 1,388.22 : x
2. Step 2: Convert to fraction form
   2,507.25/3,459.98 = 1,388.22/x
3. Step 3: Cross multiply
   2,507.25x = 3,459.98 × 1,388.22
4. Step 4: Simplify right side
   2,507.25x = 4,803,189.19
5. Step 5: Solve for x
   x = 4,803,189.19/2,507.25
6. Step 6: Final answer
   x = 1,915.72