Finding the Fourth Proportional to 1,404.63, 1,938.23 and 807.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.63 : 1,938.23 = 807.14 : x
2. Step 2: Convert to fraction form
   1,404.63/1,938.23 = 807.14/x
3. Step 3: Cross multiply
   1,404.63x = 1,938.23 × 807.14
4. Step 4: Simplify right side
   1,404.63x = 1,564,421.35
5. Step 5: Solve for x
   x = 1,564,421.35/1,404.63
6. Step 6: Final answer
   x = 1,113.76