Finding the Fourth Proportional to 1,610.37, 2,222.13 and 1,012.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.37 : 2,222.13 = 1,012.72 : x
2. Step 2: Convert to fraction form
   1,610.37/2,222.13 = 1,012.72/x
3. Step 3: Cross multiply
   1,610.37x = 2,222.13 × 1,012.72
4. Step 4: Simplify right side
   1,610.37x = 2,250,395.49
5. Step 5: Solve for x
   x = 2,250,395.49/1,610.37
6. Step 6: Final answer
   x = 1,397.44