Finding the Fourth Proportional to 1,969.71, 2,949.34 and 1,188.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.71 : 2,949.34 = 1,188.67 : x
2. Step 2: Convert to fraction form
   1,969.71/2,949.34 = 1,188.67/x
3. Step 3: Cross multiply
   1,969.71x = 2,949.34 × 1,188.67
4. Step 4: Simplify right side
   1,969.71x = 3,505,777.23
5. Step 5: Solve for x
   x = 3,505,777.23/1,969.71
6. Step 6: Final answer
   x = 1,779.85