Finding the Fourth Proportional to 1,601.31, 2,210.88 and 1,004.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.31 : 2,210.88 = 1,004.04 : x
2. Step 2: Convert to fraction form
   1,601.31/2,210.88 = 1,004.04/x
3. Step 3: Cross multiply
   1,601.31x = 2,210.88 × 1,004.04
4. Step 4: Simplify right side
   1,601.31x = 2,219,811.96
5. Step 5: Solve for x
   x = 2,219,811.96/1,601.31
6. Step 6: Final answer
   x = 1,386.25