Finding the Fourth Proportional to 1,492.04, 2,058.78 and 828.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,492.04 : 2,058.78 = 828.72 : x
2. Step 2: Convert to fraction form
   1,492.04/2,058.78 = 828.72/x
3. Step 3: Cross multiply
   1,492.04x = 2,058.78 × 828.72
4. Step 4: Simplify right side
   1,492.04x = 1,706,152.16
5. Step 5: Solve for x
   x = 1,706,152.16/1,492.04
6. Step 6: Final answer
   x = 1,143.50