Finding the Fourth Proportional to 2,507.02, 3,459.52 and 1,387.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.02 : 3,459.52 = 1,387.87 : x
2. Step 2: Convert to fraction form
   2,507.02/3,459.52 = 1,387.87/x
3. Step 3: Cross multiply
   2,507.02x = 3,459.52 × 1,387.87
4. Step 4: Simplify right side
   2,507.02x = 4,801,364.02
5. Step 5: Solve for x
   x = 4,801,364.02/2,507.02
6. Step 6: Final answer
   x = 1,915.17