Finding the Fourth Proportional to 1,493.28, 2,060.69 and 830.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,493.28 : 2,060.69 = 830.09 : x
2. Step 2: Convert to fraction form
   1,493.28/2,060.69 = 830.09/x
3. Step 3: Cross multiply
   1,493.28x = 2,060.69 × 830.09
4. Step 4: Simplify right side
   1,493.28x = 1,710,543.71
5. Step 5: Solve for x
   x = 1,710,543.71/1,493.28
6. Step 6: Final answer
   x = 1,145.49