Finding the Fourth Proportional to 1,190.34, 1,642.82 and 817.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,190.34 : 1,642.82 = 817.02 : x
2. Step 2: Convert to fraction form
   1,190.34/1,642.82 = 817.02/x
3. Step 3: Cross multiply
   1,190.34x = 1,642.82 × 817.02
4. Step 4: Simplify right side
   1,190.34x = 1,342,212.71
5. Step 5: Solve for x
   x = 1,342,212.71/1,190.34
6. Step 6: Final answer
   x = 1,127.59