Finding the Fourth Proportional to 1,564.11, 2,158.59 and 934.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,564.11 : 2,158.59 = 934.83 : x
2. Step 2: Convert to fraction form
   1,564.11/2,158.59 = 934.83/x
3. Step 3: Cross multiply
   1,564.11x = 2,158.59 × 934.83
4. Step 4: Simplify right side
   1,564.11x = 2,017,914.69
5. Step 5: Solve for x
   x = 2,017,914.69/1,564.11
6. Step 6: Final answer
   x = 1,290.14