Finding the Fourth Proportional to 1,375.66, 2,061.06 and 912.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.66 : 2,061.06 = 912.34 : x
2. Step 2: Convert to fraction form
   1,375.66/2,061.06 = 912.34/x
3. Step 3: Cross multiply
   1,375.66x = 2,061.06 × 912.34
4. Step 4: Simplify right side
   1,375.66x = 1,880,387.48
5. Step 5: Solve for x
   x = 1,880,387.48/1,375.66
6. Step 6: Final answer
   x = 1,366.90