Finding the Fourth Proportional to 1,493.87, 2,061.54 and 830.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,493.87 : 2,061.54 = 830.79 : x
2. Step 2: Convert to fraction form
   1,493.87/2,061.54 = 830.79/x
3. Step 3: Cross multiply
   1,493.87x = 2,061.54 × 830.79
4. Step 4: Simplify right side
   1,493.87x = 1,712,706.82
5. Step 5: Solve for x
   x = 1,712,706.82/1,493.87
6. Step 6: Final answer
   x = 1,146.49