Finding the Fourth Proportional to 1,354.32, 2,034.22 and 807.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.32 : 2,034.22 = 807.57 : x
2. Step 2: Convert to fraction form
   1,354.32/2,034.22 = 807.57/x
3. Step 3: Cross multiply
   1,354.32x = 2,034.22 × 807.57
4. Step 4: Simplify right side
   1,354.32x = 1,642,780.65
5. Step 5: Solve for x
   x = 1,642,780.65/1,354.32
6. Step 6: Final answer
   x = 1,212.99