Finding the Fourth Proportional to 1,453.56, 2,005.86 and 790.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.56 : 2,005.86 = 790.38 : x
2. Step 2: Convert to fraction form
   1,453.56/2,005.86 = 790.38/x
3. Step 3: Cross multiply
   1,453.56x = 2,005.86 × 790.38
4. Step 4: Simplify right side
   1,453.56x = 1,585,391.63
5. Step 5: Solve for x
   x = 1,585,391.63/1,453.56
6. Step 6: Final answer
   x = 1,090.70