Finding the Fourth Proportional to 1,385.67, 2,066.34 and 1,176.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.67 : 2,066.34 = 1,176.69 : x
2. Step 2: Convert to fraction form
   1,385.67/2,066.34 = 1,176.69/x
3. Step 3: Cross multiply
   1,385.67x = 2,066.34 × 1,176.69
4. Step 4: Simplify right side
   1,385.67x = 2,431,441.61
5. Step 5: Solve for x
   x = 2,431,441.61/1,385.67
6. Step 6: Final answer
   x = 1,754.70