Finding the Fourth Proportional to 2,358.72, 3,538.56 and 1,188.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,358.72 : 3,538.56 = 1,188.48 : x
2. Step 2: Convert to fraction form
   2,358.72/3,538.56 = 1,188.48/x
3. Step 3: Cross multiply
   2,358.72x = 3,538.56 × 1,188.48
4. Step 4: Simplify right side
   2,358.72x = 4,205,507.79
5. Step 5: Solve for x
   x = 4,205,507.79/2,358.72
6. Step 6: Final answer
   x = 1,782.96