Finding the Fourth Proportional to 1,453.54, 2,005.88 and 790.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.54 : 2,005.88 = 790.38 : x
2. Step 2: Convert to fraction form
   1,453.54/2,005.88 = 790.38/x
3. Step 3: Cross multiply
   1,453.54x = 2,005.88 × 790.38
4. Step 4: Simplify right side
   1,453.54x = 1,585,407.43
5. Step 5: Solve for x
   x = 1,585,407.43/1,453.54
6. Step 6: Final answer
   x = 1,090.72