Finding the Fourth Proportional to 2,507.32, 3,459.93 and 1,388.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.32 : 3,459.93 = 1,388.19 : x
2. Step 2: Convert to fraction form
   2,507.32/3,459.93 = 1,388.19/x
3. Step 3: Cross multiply
   2,507.32x = 3,459.93 × 1,388.19
4. Step 4: Simplify right side
   2,507.32x = 4,803,040.23
5. Step 5: Solve for x
   x = 4,803,040.23/2,507.32
6. Step 6: Final answer
   x = 1,915.61