Finding the Fourth Proportional to 2,507.38, 3,460.16 and 1,388.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.38 : 3,460.16 = 1,388.32 : x
2. Step 2: Convert to fraction form
   2,507.38/3,460.16 = 1,388.32/x
3. Step 3: Cross multiply
   2,507.38x = 3,460.16 × 1,388.32
4. Step 4: Simplify right side
   2,507.38x = 4,803,809.33
5. Step 5: Solve for x
   x = 4,803,809.33/2,507.38
6. Step 6: Final answer
   x = 1,915.87