Finding the Fourth Proportional to 1,535.07, 2,118.33 and 836.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,535.07 : 2,118.33 = 836.43 : x
2. Step 2: Convert to fraction form
   1,535.07/2,118.33 = 836.43/x
3. Step 3: Cross multiply
   1,535.07x = 2,118.33 × 836.43
4. Step 4: Simplify right side
   1,535.07x = 1,771,834.76
5. Step 5: Solve for x
   x = 1,771,834.76/1,535.07
6. Step 6: Final answer
   x = 1,154.24