Finding the Fourth Proportional to 2,103.50, 2,902.85 and 1,172.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.50 : 2,902.85 = 1,172.02 : x
2. Step 2: Convert to fraction form
   2,103.50/2,902.85 = 1,172.02/x
3. Step 3: Cross multiply
   2,103.50x = 2,902.85 × 1,172.02
4. Step 4: Simplify right side
   2,103.50x = 3,402,198.26
5. Step 5: Solve for x
   x = 3,402,198.26/2,103.50
6. Step 6: Final answer
   x = 1,617.40