Finding the Fourth Proportional to 2,653.02, 3,978.63 and 1,191.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.02 : 3,978.63 = 1,191.38 : x
2. Step 2: Convert to fraction form
   2,653.02/3,978.63 = 1,191.38/x
3. Step 3: Cross multiply
   2,653.02x = 3,978.63 × 1,191.38
4. Step 4: Simplify right side
   2,653.02x = 4,740,040.32
5. Step 5: Solve for x
   x = 4,740,040.32/2,653.02
6. Step 6: Final answer
   x = 1,786.66