Finding the Fourth Proportional to 1,493.94, 2,061.72 and 830.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,493.94 : 2,061.72 = 830.79 : x
2. Step 2: Convert to fraction form
   1,493.94/2,061.72 = 830.79/x
3. Step 3: Cross multiply
   1,493.94x = 2,061.72 × 830.79
4. Step 4: Simplify right side
   1,493.94x = 1,712,856.36
5. Step 5: Solve for x
   x = 1,712,856.36/1,493.94
6. Step 6: Final answer
   x = 1,146.54