Finding the Fourth Proportional to 1,401.28, 1,936.08 and 1,087.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.28 : 1,936.08 = 1,087.84 : x
2. Step 2: Convert to fraction form
   1,401.28/1,936.08 = 1,087.84/x
3. Step 3: Cross multiply
   1,401.28x = 1,936.08 × 1,087.84
4. Step 4: Simplify right side
   1,401.28x = 2,106,145.27
5. Step 5: Solve for x
   x = 2,106,145.27/1,401.28
6. Step 6: Final answer
   x = 1,503.02