Finding the Fourth Proportional to 3,535.69, 5,300.28 and 1,225.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,535.69 : 5,300.28 = 1,225.57 : x
2. Step 2: Convert to fraction form
   3,535.69/5,300.28 = 1,225.57/x
3. Step 3: Cross multiply
   3,535.69x = 5,300.28 × 1,225.57
4. Step 4: Simplify right side
   3,535.69x = 6,495,864.16
5. Step 5: Solve for x
   x = 6,495,864.16/3,535.69
6. Step 6: Final answer
   x = 1,837.23