Finding the Fourth Proportional to 2,088.87, 2,881.37 and 1,380.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,088.87 : 2,881.37 = 1,380.72 : x
2. Step 2: Convert to fraction form
   2,088.87/2,881.37 = 1,380.72/x
3. Step 3: Cross multiply
   2,088.87x = 2,881.37 × 1,380.72
4. Step 4: Simplify right side
   2,088.87x = 3,978,365.19
5. Step 5: Solve for x
   x = 3,978,365.19/2,088.87
6. Step 6: Final answer
   x = 1,904.55