Finding the Fourth Proportional to 2,355.08, 3,248.70 and 2,188.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,355.08 : 3,248.70 = 2,188.22 : x
2. Step 2: Convert to fraction form
   2,355.08/3,248.70 = 2,188.22/x
3. Step 3: Cross multiply
   2,355.08x = 3,248.70 × 2,188.22
4. Step 4: Simplify right side
   2,355.08x = 7,108,870.31
5. Step 5: Solve for x
   x = 7,108,870.31/2,355.08
6. Step 6: Final answer
   x = 3,018.53