Finding the Fourth Proportional to 2,020.74, 3,030.02 and 1,188.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.74 : 3,030.02 = 1,188.09 : x
2. Step 2: Convert to fraction form
   2,020.74/3,030.02 = 1,188.09/x
3. Step 3: Cross multiply
   2,020.74x = 3,030.02 × 1,188.09
4. Step 4: Simplify right side
   2,020.74x = 3,599,936.46
5. Step 5: Solve for x
   x = 3,599,936.46/2,020.74
6. Step 6: Final answer
   x = 1,781.49