Finding the Fourth Proportional to 1,404.46, 1,938.08 and 783.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.46 : 1,938.08 = 783.34 : x
2. Step 2: Convert to fraction form
   1,404.46/1,938.08 = 783.34/x
3. Step 3: Cross multiply
   1,404.46x = 1,938.08 × 783.34
4. Step 4: Simplify right side
   1,404.46x = 1,518,161.98
5. Step 5: Solve for x
   x = 1,518,161.98/1,404.46
6. Step 6: Final answer
   x = 1,080.96