Finding the Fourth Proportional to 1,167.03, 1,605.69 and 1,020.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.03 : 1,605.69 = 1,020.02 : x
2. Step 2: Convert to fraction form
   1,167.03/1,605.69 = 1,020.02/x
3. Step 3: Cross multiply
   1,167.03x = 1,605.69 × 1,020.02
4. Step 4: Simplify right side
   1,167.03x = 1,637,827.89
5. Step 5: Solve for x
   x = 1,637,827.89/1,167.03
6. Step 6: Final answer
   x = 1,403.42