Finding the Fourth Proportional to 1,162.83, 1,607.25 and 1,021.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.83 : 1,607.25 = 1,021.89 : x
2. Step 2: Convert to fraction form
   1,162.83/1,607.25 = 1,021.89/x
3. Step 3: Cross multiply
   1,162.83x = 1,607.25 × 1,021.89
4. Step 4: Simplify right side
   1,162.83x = 1,642,432.70
5. Step 5: Solve for x
   x = 1,642,432.70/1,162.83
6. Step 6: Final answer
   x = 1,412.44