Finding the Fourth Proportional to 1,970.69, 2,719.55 and 1,074.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.69 : 2,719.55 = 1,074.42 : x
2. Step 2: Convert to fraction form
   1,970.69/2,719.55 = 1,074.42/x
3. Step 3: Cross multiply
   1,970.69x = 2,719.55 × 1,074.42
4. Step 4: Simplify right side
   1,970.69x = 2,921,938.91
5. Step 5: Solve for x
   x = 2,921,938.91/1,970.69
6. Step 6: Final answer
   x = 1,482.70