Finding the Fourth Proportional to 2,187.80, 3,019.18 and 1,193.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.80 : 3,019.18 = 1,193.08 : x
2. Step 2: Convert to fraction form
   2,187.80/3,019.18 = 1,193.08/x
3. Step 3: Cross multiply
   2,187.80x = 3,019.18 × 1,193.08
4. Step 4: Simplify right side
   2,187.80x = 3,602,123.27
5. Step 5: Solve for x
   x = 3,602,123.27/2,187.80
6. Step 6: Final answer
   x = 1,646.46