Finding the Fourth Proportional to 1,404.63, 1,938.42 and 807.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.63 : 1,938.42 = 807.23 : x
2. Step 2: Convert to fraction form
   1,404.63/1,938.42 = 807.23/x
3. Step 3: Cross multiply
   1,404.63x = 1,938.42 × 807.23
4. Step 4: Simplify right side
   1,404.63x = 1,564,741.08
5. Step 5: Solve for x
   x = 1,564,741.08/1,404.63
6. Step 6: Final answer
   x = 1,113.99