Finding the Fourth Proportional to 1,493.34, 2,060.79 and 830.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,493.34 : 2,060.79 = 830.20 : x
2. Step 2: Convert to fraction form
   1,493.34/2,060.79 = 830.20/x
3. Step 3: Cross multiply
   1,493.34x = 2,060.79 × 830.20
4. Step 4: Simplify right side
   1,493.34x = 1,710,868.13
5. Step 5: Solve for x
   x = 1,710,868.13/1,493.34
6. Step 6: Final answer
   x = 1,145.67