Finding the Fourth Proportional to 1,493.81, 2,061.53 and 830.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,493.81 : 2,061.53 = 830.73 : x
2. Step 2: Convert to fraction form
   1,493.81/2,061.53 = 830.73/x
3. Step 3: Cross multiply
   1,493.81x = 2,061.53 × 830.73
4. Step 4: Simplify right side
   1,493.81x = 1,712,570.66
5. Step 5: Solve for x
   x = 1,712,570.66/1,493.81
6. Step 6: Final answer
   x = 1,146.45