Finding the Fourth Proportional to 1,492.86, 2,060.31 and 863.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,492.86 : 2,060.31 = 863.58 : x
2. Step 2: Convert to fraction form
   1,492.86/2,060.31 = 863.58/x
3. Step 3: Cross multiply
   1,492.86x = 2,060.31 × 863.58
4. Step 4: Simplify right side
   1,492.86x = 1,779,242.51
5. Step 5: Solve for x
   x = 1,779,242.51/1,492.86
6. Step 6: Final answer
   x = 1,191.83