Finding the Fourth Proportional to 1,453.55, 2,005.91 and 790.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.55 : 2,005.91 = 790.42 : x
2. Step 2: Convert to fraction form
   1,453.55/2,005.91 = 790.42/x
3. Step 3: Cross multiply
   1,453.55x = 2,005.91 × 790.42
4. Step 4: Simplify right side
   1,453.55x = 1,585,503.33
5. Step 5: Solve for x
   x = 1,585,503.33/1,453.55
6. Step 6: Final answer
   x = 1,090.78