Finding the Fourth Proportional to 1,665.33, 2,281.48 and 1,603.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.33 : 2,281.48 = 1,603.01 : x
2. Step 2: Convert to fraction form
   1,665.33/2,281.48 = 1,603.01/x
3. Step 3: Cross multiply
   1,665.33x = 2,281.48 × 1,603.01
4. Step 4: Simplify right side
   1,665.33x = 3,657,235.25
5. Step 5: Solve for x
   x = 3,657,235.25/1,665.33
6. Step 6: Final answer
   x = 2,196.10