Finding the Fourth Proportional to 1,979.60, 2,969.72 and 883.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,979.60 : 2,969.72 = 883.94 : x
2. Step 2: Convert to fraction form
   1,979.60/2,969.72 = 883.94/x
3. Step 3: Cross multiply
   1,979.60x = 2,969.72 × 883.94
4. Step 4: Simplify right side
   1,979.60x = 2,625,054.30
5. Step 5: Solve for x
   x = 2,625,054.30/1,979.60
6. Step 6: Final answer
   x = 1,326.05