Finding the Fourth Proportional to 1,453.30, 2,005.56 and 790.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.30 : 2,005.56 = 790.18 : x
2. Step 2: Convert to fraction form
   1,453.30/2,005.56 = 790.18/x
3. Step 3: Cross multiply
   1,453.30x = 2,005.56 × 790.18
4. Step 4: Simplify right side
   1,453.30x = 1,584,748.39
5. Step 5: Solve for x
   x = 1,584,748.39/1,453.30
6. Step 6: Final answer
   x = 1,090.45