Finding the Fourth Proportional to 1,637.39, 2,458.20 and 1,019.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,637.39 : 2,458.20 = 1,019.15 : x
2. Step 2: Convert to fraction form
   1,637.39/2,458.20 = 1,019.15/x
3. Step 3: Cross multiply
   1,637.39x = 2,458.20 × 1,019.15
4. Step 4: Simplify right side
   1,637.39x = 2,505,274.53
5. Step 5: Solve for x
   x = 2,505,274.53/1,637.39
6. Step 6: Final answer
   x = 1,530.04