Finding the Fourth Proportional to 2,978.68, 4,460.70 and 2,455.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.68 : 4,460.70 = 2,455.48 : x
2. Step 2: Convert to fraction form
   2,978.68/4,460.70 = 2,455.48/x
3. Step 3: Cross multiply
   2,978.68x = 4,460.70 × 2,455.48
4. Step 4: Simplify right side
   2,978.68x = 10,953,159.64
5. Step 5: Solve for x
   x = 10,953,159.64/2,978.68
6. Step 6: Final answer
   x = 3,677.19