Finding the Fourth Proportional to 1,534.89, 2,117.90 and 862.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,534.89 : 2,117.90 = 862.73 : x
2. Step 2: Convert to fraction form
   1,534.89/2,117.90 = 862.73/x
3. Step 3: Cross multiply
   1,534.89x = 2,117.90 × 862.73
4. Step 4: Simplify right side
   1,534.89x = 1,827,167.43
5. Step 5: Solve for x
   x = 1,827,167.43/1,534.89
6. Step 6: Final answer
   x = 1,190.42