Finding the Fourth Proportional to 2,507.49, 3,460.32 and 1,388.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.49 : 3,460.32 = 1,388.48 : x
2. Step 2: Convert to fraction form
   2,507.49/3,460.32 = 1,388.48/x
3. Step 3: Cross multiply
   2,507.49x = 3,460.32 × 1,388.48
4. Step 4: Simplify right side
   2,507.49x = 4,804,567.81
5. Step 5: Solve for x
   x = 4,804,567.81/2,507.49
6. Step 6: Final answer
   x = 1,916.09