Finding the Fourth Proportional to 1,298.96, 1,792.52 and 709.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298.96 : 1,792.52 = 709.52 : x
2. Step 2: Convert to fraction form
   1,298.96/1,792.52 = 709.52/x
3. Step 3: Cross multiply
   1,298.96x = 1,792.52 × 709.52
4. Step 4: Simplify right side
   1,298.96x = 1,271,828.79
5. Step 5: Solve for x
   x = 1,271,828.79/1,298.96
6. Step 6: Final answer
   x = 979.11