Finding the Fourth Proportional to 1,642.34, 2,266.22 and 933.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642.34 : 2,266.22 = 933.94 : x
2. Step 2: Convert to fraction form
   1,642.34/2,266.22 = 933.94/x
3. Step 3: Cross multiply
   1,642.34x = 2,266.22 × 933.94
4. Step 4: Simplify right side
   1,642.34x = 2,116,513.51
5. Step 5: Solve for x
   x = 2,116,513.51/1,642.34
6. Step 6: Final answer
   x = 1,288.72