Finding the Fourth Proportional to 1,358.56, 1,874.90 and 761.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358.56 : 1,874.90 = 761.10 : x
2. Step 2: Convert to fraction form
   1,358.56/1,874.90 = 761.10/x
3. Step 3: Cross multiply
   1,358.56x = 1,874.90 × 761.10
4. Step 4: Simplify right side
   1,358.56x = 1,426,976.98
5. Step 5: Solve for x
   x = 1,426,976.98/1,358.56
6. Step 6: Final answer
   x = 1,050.36