Finding the Fourth Proportional to 2,071.32, 3,113.12 and 1,918.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.32 : 3,113.12 = 1,918.54 : x
2. Step 2: Convert to fraction form
   2,071.32/3,113.12 = 1,918.54/x
3. Step 3: Cross multiply
   2,071.32x = 3,113.12 × 1,918.54
4. Step 4: Simplify right side
   2,071.32x = 5,972,645.24
5. Step 5: Solve for x
   x = 5,972,645.24/2,071.32
6. Step 6: Final answer
   x = 2,883.50