Finding the Fourth Proportional to 1,493.45, 2,060.71 and 830.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,493.45 : 2,060.71 = 830.28 : x
2. Step 2: Convert to fraction form
   1,493.45/2,060.71 = 830.28/x
3. Step 3: Cross multiply
   1,493.45x = 2,060.71 × 830.28
4. Step 4: Simplify right side
   1,493.45x = 1,710,966.30
5. Step 5: Solve for x
   x = 1,710,966.30/1,493.45
6. Step 6: Final answer
   x = 1,145.65