Finding the Fourth Proportional to 1,969.06, 2,950.80 and 1,091.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.06 : 2,950.80 = 1,091.95 : x
2. Step 2: Convert to fraction form
   1,969.06/2,950.80 = 1,091.95/x
3. Step 3: Cross multiply
   1,969.06x = 2,950.80 × 1,091.95
4. Step 4: Simplify right side
   1,969.06x = 3,222,111.31
5. Step 5: Solve for x
   x = 3,222,111.31/1,969.06
6. Step 6: Final answer
   x = 1,636.37