Finding the Fourth Proportional to 2,507.56, 3,460.38 and 1,388.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.56 : 3,460.38 = 1,388.46 : x
2. Step 2: Convert to fraction form
   2,507.56/3,460.38 = 1,388.46/x
3. Step 3: Cross multiply
   2,507.56x = 3,460.38 × 1,388.46
4. Step 4: Simplify right side
   2,507.56x = 4,804,599.21
5. Step 5: Solve for x
   x = 4,804,599.21/2,507.56
6. Step 6: Final answer
   x = 1,916.05