Finding the Fourth Proportional to 1,453.90, 2,179.23 and 1,128.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.90 : 2,179.23 = 1,128.46 : x
2. Step 2: Convert to fraction form
   1,453.90/2,179.23 = 1,128.46/x
3. Step 3: Cross multiply
   1,453.90x = 2,179.23 × 1,128.46
4. Step 4: Simplify right side
   1,453.90x = 2,459,173.89
5. Step 5: Solve for x
   x = 2,459,173.89/1,453.90
6. Step 6: Final answer
   x = 1,691.43