Finding the Fourth Proportional to 1,017.93, 1,404.03 and 862.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.93 : 1,404.03 = 862.02 : x
2. Step 2: Convert to fraction form
   1,017.93/1,404.03 = 862.02/x
3. Step 3: Cross multiply
   1,017.93x = 1,404.03 × 862.02
4. Step 4: Simplify right side
   1,017.93x = 1,210,301.94
5. Step 5: Solve for x
   x = 1,210,301.94/1,017.93
6. Step 6: Final answer
   x = 1,188.98