Finding the Fourth Proportional to 1,411.05, 2,113.20 and 760.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.05 : 2,113.20 = 760.35 : x
2. Step 2: Convert to fraction form
   1,411.05/2,113.20 = 760.35/x
3. Step 3: Cross multiply
   1,411.05x = 2,113.20 × 760.35
4. Step 4: Simplify right side
   1,411.05x = 1,606,771.62
5. Step 5: Solve for x
   x = 1,606,771.62/1,411.05
6. Step 6: Final answer
   x = 1,138.71