Finding the Fourth Proportional to 1,417.33, 1,955.36 and 819.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.33 : 1,955.36 = 819.72 : x
2. Step 2: Convert to fraction form
   1,417.33/1,955.36 = 819.72/x
3. Step 3: Cross multiply
   1,417.33x = 1,955.36 × 819.72
4. Step 4: Simplify right side
   1,417.33x = 1,602,835.87
5. Step 5: Solve for x
   x = 1,602,835.87/1,417.33
6. Step 6: Final answer
   x = 1,130.88