Finding the Fourth Proportional to 3,691.50, 5,094.28 and 2,012.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,691.50 : 5,094.28 = 2,012.88 : x
2. Step 2: Convert to fraction form
   3,691.50/5,094.28 = 2,012.88/x
3. Step 3: Cross multiply
   3,691.50x = 5,094.28 × 2,012.88
4. Step 4: Simplify right side
   3,691.50x = 10,254,174.33
5. Step 5: Solve for x
   x = 10,254,174.33/3,691.50
6. Step 6: Final answer
   x = 2,777.78