Finding the Fourth Proportional to 2,237.56, 3,087.86 and 1,353.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,237.56 : 3,087.86 = 1,353.20 : x
2. Step 2: Convert to fraction form
   2,237.56/3,087.86 = 1,353.20/x
3. Step 3: Cross multiply
   2,237.56x = 3,087.86 × 1,353.20
4. Step 4: Simplify right side
   2,237.56x = 4,178,492.15
5. Step 5: Solve for x
   x = 4,178,492.15/2,237.56
6. Step 6: Final answer
   x = 1,867.43