Finding the Fourth Proportional to 2,137.73, 3,199.93 and 1,355.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137.73 : 3,199.93 = 1,355.02 : x
2. Step 2: Convert to fraction form
   2,137.73/3,199.93 = 1,355.02/x
3. Step 3: Cross multiply
   2,137.73x = 3,199.93 × 1,355.02
4. Step 4: Simplify right side
   2,137.73x = 4,335,969.15
5. Step 5: Solve for x
   x = 4,335,969.15/2,137.73
6. Step 6: Final answer
   x = 2,028.31