Finding the Fourth Proportional to 1,010.72, 1,516.16 and 889.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010.72 : 1,516.16 = 889.83 : x
2. Step 2: Convert to fraction form
   1,010.72/1,516.16 = 889.83/x
3. Step 3: Cross multiply
   1,010.72x = 1,516.16 × 889.83
4. Step 4: Simplify right side
   1,010.72x = 1,349,126.88
5. Step 5: Solve for x
   x = 1,349,126.88/1,010.72
6. Step 6: Final answer
   x = 1,334.81