Finding the Fourth Proportional to 1,433.32, 1,978.14 and 803.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.32 : 1,978.14 = 803.95 : x
2. Step 2: Convert to fraction form
   1,433.32/1,978.14 = 803.95/x
3. Step 3: Cross multiply
   1,433.32x = 1,978.14 × 803.95
4. Step 4: Simplify right side
   1,433.32x = 1,590,325.65
5. Step 5: Solve for x
   x = 1,590,325.65/1,433.32
6. Step 6: Final answer
   x = 1,109.54