Finding the Fourth Proportional to 1,404.67, 1,938.45 and 783.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.67 : 1,938.45 = 783.67 : x
2. Step 2: Convert to fraction form
   1,404.67/1,938.45 = 783.67/x
3. Step 3: Cross multiply
   1,404.67x = 1,938.45 × 783.67
4. Step 4: Simplify right side
   1,404.67x = 1,519,108.00
5. Step 5: Solve for x
   x = 1,519,108.00/1,404.67
6. Step 6: Final answer
   x = 1,081.47