Finding the Fourth Proportional to 1,453.31, 2,005.58 and 790.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.31 : 2,005.58 = 790.18 : x
2. Step 2: Convert to fraction form
   1,453.31/2,005.58 = 790.18/x
3. Step 3: Cross multiply
   1,453.31x = 2,005.58 × 790.18
4. Step 4: Simplify right side
   1,453.31x = 1,584,769.20
5. Step 5: Solve for x
   x = 1,584,769.20/1,453.31
6. Step 6: Final answer
   x = 1,090.46