Finding the Fourth Proportional to 1,635.42, 2,449.54 and 1,507.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,635.42 : 2,449.54 = 1,507.39 : x
2. Step 2: Convert to fraction form
   1,635.42/2,449.54 = 1,507.39/x
3. Step 3: Cross multiply
   1,635.42x = 2,449.54 × 1,507.39
4. Step 4: Simplify right side
   1,635.42x = 3,692,402.21
5. Step 5: Solve for x
   x = 3,692,402.21/1,635.42
6. Step 6: Final answer
   x = 2,257.77