Finding the Fourth Proportional to 1,564.29, 2,156.55 and 1,091.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,564.29 : 2,156.55 = 1,091.52 : x
2. Step 2: Convert to fraction form
   1,564.29/2,156.55 = 1,091.52/x
3. Step 3: Cross multiply
   1,564.29x = 2,156.55 × 1,091.52
4. Step 4: Simplify right side
   1,564.29x = 2,353,917.46
5. Step 5: Solve for x
   x = 2,353,917.46/1,564.29
6. Step 6: Final answer
   x = 1,504.78