Finding the Fourth Proportional to 2,111.14, 2,912.79 and 1,365.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.14 : 2,912.79 = 1,365.13 : x
2. Step 2: Convert to fraction form
   2,111.14/2,912.79 = 1,365.13/x
3. Step 3: Cross multiply
   2,111.14x = 2,912.79 × 1,365.13
4. Step 4: Simplify right side
   2,111.14x = 3,976,337.01
5. Step 5: Solve for x
   x = 3,976,337.01/2,111.14
6. Step 6: Final answer
   x = 1,883.50