Finding the Fourth Proportional to 2,091.15, 2,888.73 and 1,904.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.15 : 2,888.73 = 1,904.34 : x
2. Step 2: Convert to fraction form
   2,091.15/2,888.73 = 1,904.34/x
3. Step 3: Cross multiply
   2,091.15x = 2,888.73 × 1,904.34
4. Step 4: Simplify right side
   2,091.15x = 5,501,134.92
5. Step 5: Solve for x
   x = 5,501,134.92/2,091.15
6. Step 6: Final answer
   x = 2,630.67