Finding the Fourth Proportional to 2,103.87, 3,155.58 and 933.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.87 : 3,155.58 = 933.90 : x
2. Step 2: Convert to fraction form
   2,103.87/3,155.58 = 933.90/x
3. Step 3: Cross multiply
   2,103.87x = 3,155.58 × 933.90
4. Step 4: Simplify right side
   2,103.87x = 2,946,996.16
5. Step 5: Solve for x
   x = 2,946,996.16/2,103.87
6. Step 6: Final answer
   x = 1,400.75