Finding the Fourth Proportional to 2,663.76, 3,672.72 and 2,190

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.76 : 3,672.72 = 2,190 : x
2. Step 2: Convert to fraction form
   2,663.76/3,672.72 = 2,190/x
3. Step 3: Cross multiply
   2,663.76x = 3,672.72 × 2,190
4. Step 4: Simplify right side
   2,663.76x = 8,043,256.80
5. Step 5: Solve for x
   x = 8,043,256.80/2,663.76
6. Step 6: Final answer
   x = 3,019.51