Finding the Fourth Proportional to 1,453.55, 2,005.89 and 790.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.55 : 2,005.89 = 790.39 : x
2. Step 2: Convert to fraction form
   1,453.55/2,005.89 = 790.39/x
3. Step 3: Cross multiply
   1,453.55x = 2,005.89 × 790.39
4. Step 4: Simplify right side
   1,453.55x = 1,585,446.14
5. Step 5: Solve for x
   x = 1,585,446.14/1,453.55
6. Step 6: Final answer
   x = 1,090.74