Finding the Fourth Proportional to 2,103.50, 2,902.46 and 1,431.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.50 : 2,902.46 = 1,431.62 : x
2. Step 2: Convert to fraction form
   2,103.50/2,902.46 = 1,431.62/x
3. Step 3: Cross multiply
   2,103.50x = 2,902.46 × 1,431.62
4. Step 4: Simplify right side
   2,103.50x = 4,155,219.79
5. Step 5: Solve for x
   x = 4,155,219.79/2,103.50
6. Step 6: Final answer
   x = 1,975.38