Finding the Fourth Proportional to 1,455.39, 2,008.42 and 826.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,455.39 : 2,008.42 = 826.05 : x
2. Step 2: Convert to fraction form
   1,455.39/2,008.42 = 826.05/x
3. Step 3: Cross multiply
   1,455.39x = 2,008.42 × 826.05
4. Step 4: Simplify right side
   1,455.39x = 1,659,055.34
5. Step 5: Solve for x
   x = 1,659,055.34/1,455.39
6. Step 6: Final answer
   x = 1,139.94