Finding the Fourth Proportional to 2,101.74, 2,900.43 and 1,355.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.74 : 2,900.43 = 1,355.73 : x
2. Step 2: Convert to fraction form
   2,101.74/2,900.43 = 1,355.73/x
3. Step 3: Cross multiply
   2,101.74x = 2,900.43 × 1,355.73
4. Step 4: Simplify right side
   2,101.74x = 3,932,199.96
5. Step 5: Solve for x
   x = 3,932,199.96/2,101.74
6. Step 6: Final answer
   x = 1,870.93