Finding the Fourth Proportional to 1,984.30, 2,973.60 and 1,116.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,984.30 : 2,973.60 = 1,116.78 : x
2. Step 2: Convert to fraction form
   1,984.30/2,973.60 = 1,116.78/x
3. Step 3: Cross multiply
   1,984.30x = 2,973.60 × 1,116.78
4. Step 4: Simplify right side
   1,984.30x = 3,320,857.01
5. Step 5: Solve for x
   x = 3,320,857.01/1,984.30
6. Step 6: Final answer
   x = 1,673.57