Finding the Fourth Proportional to 1,903.40, 2,838.04 and 1,886.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,903.40 : 2,838.04 = 1,886.42 : x
2. Step 2: Convert to fraction form
   1,903.40/2,838.04 = 1,886.42/x
3. Step 3: Cross multiply
   1,903.40x = 2,838.04 × 1,886.42
4. Step 4: Simplify right side
   1,903.40x = 5,353,735.42
5. Step 5: Solve for x
   x = 5,353,735.42/1,903.40
6. Step 6: Final answer
   x = 2,812.72