Finding the Fourth Proportional to 1,970.62, 2,719.59 and 1,142.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.62 : 2,719.59 = 1,142.62 : x
2. Step 2: Convert to fraction form
   1,970.62/2,719.59 = 1,142.62/x
3. Step 3: Cross multiply
   1,970.62x = 2,719.59 × 1,142.62
4. Step 4: Simplify right side
   1,970.62x = 3,107,457.93
5. Step 5: Solve for x
   x = 3,107,457.93/1,970.62
6. Step 6: Final answer
   x = 1,576.89