Finding the Fourth Proportional to 2,189.35, 3,285.03 and 1,189.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.35 : 3,285.03 = 1,189.02 : x
2. Step 2: Convert to fraction form
   2,189.35/3,285.03 = 1,189.02/x
3. Step 3: Cross multiply
   2,189.35x = 3,285.03 × 1,189.02
4. Step 4: Simplify right side
   2,189.35x = 3,905,970.57
5. Step 5: Solve for x
   x = 3,905,970.57/2,189.35
6. Step 6: Final answer
   x = 1,784.08