Finding the Fourth Proportional to 1,601.19, 2,210.72 and 1,003.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.19 : 2,210.72 = 1,003.92 : x
2. Step 2: Convert to fraction form
   1,601.19/2,210.72 = 1,003.92/x
3. Step 3: Cross multiply
   1,601.19x = 2,210.72 × 1,003.92
4. Step 4: Simplify right side
   1,601.19x = 2,219,386.02
5. Step 5: Solve for x
   x = 2,219,386.02/1,601.19
6. Step 6: Final answer
   x = 1,386.09