Finding the Fourth Proportional to 1,979.56, 2,731.98 and 1,316.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,979.56 : 2,731.98 = 1,316.62 : x
2. Step 2: Convert to fraction form
   1,979.56/2,731.98 = 1,316.62/x
3. Step 3: Cross multiply
   1,979.56x = 2,731.98 × 1,316.62
4. Step 4: Simplify right side
   1,979.56x = 3,596,980.45
5. Step 5: Solve for x
   x = 3,596,980.45/1,979.56
6. Step 6: Final answer
   x = 1,817.06