Finding the Fourth Proportional to 1,096.11, 1,642.71 and 913.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.11 : 1,642.71 = 913.86 : x
2. Step 2: Convert to fraction form
   1,096.11/1,642.71 = 913.86/x
3. Step 3: Cross multiply
   1,096.11x = 1,642.71 × 913.86
4. Step 4: Simplify right side
   1,096.11x = 1,501,206.96
5. Step 5: Solve for x
   x = 1,501,206.96/1,096.11
6. Step 6: Final answer
   x = 1,369.58