Finding the Fourth Proportional to 1,610.04, 2,221.86 and 901.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.04 : 2,221.86 = 901.94 : x
2. Step 2: Convert to fraction form
   1,610.04/2,221.86 = 901.94/x
3. Step 3: Cross multiply
   1,610.04x = 2,221.86 × 901.94
4. Step 4: Simplify right side
   1,610.04x = 2,003,984.41
5. Step 5: Solve for x
   x = 2,003,984.41/1,610.04
6. Step 6: Final answer
   x = 1,244.68