Finding the Fourth Proportional to 2,111.28, 2,913.36 and 1,179.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.28 : 2,913.36 = 1,179.84 : x
2. Step 2: Convert to fraction form
   2,111.28/2,913.36 = 1,179.84/x
3. Step 3: Cross multiply
   2,111.28x = 2,913.36 × 1,179.84
4. Step 4: Simplify right side
   2,111.28x = 3,437,298.66
5. Step 5: Solve for x
   x = 3,437,298.66/2,111.28
6. Step 6: Final answer
   x = 1,628.06