Finding the Fourth Proportional to 2,357.81, 3,536.48 and 1,187.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,357.81 : 3,536.48 = 1,187.34 : x
2. Step 2: Convert to fraction form
   2,357.81/3,536.48 = 1,187.34/x
3. Step 3: Cross multiply
   2,357.81x = 3,536.48 × 1,187.34
4. Step 4: Simplify right side
   2,357.81x = 4,198,998.23
5. Step 5: Solve for x
   x = 4,198,998.23/2,357.81
6. Step 6: Final answer
   x = 1,780.89