Finding the Fourth Proportional to 1,023.39, 1,412.46 and 603.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,023.39 : 1,412.46 = 603.99 : x
2. Step 2: Convert to fraction form
   1,023.39/1,412.46 = 603.99/x
3. Step 3: Cross multiply
   1,023.39x = 1,412.46 × 603.99
4. Step 4: Simplify right side
   1,023.39x = 853,111.72
5. Step 5: Solve for x
   x = 853,111.72/1,023.39
6. Step 6: Final answer
   x = 833.61