Finding the Fourth Proportional to 1,376.10, 1,898.69 and 934.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.10 : 1,898.69 = 934.43 : x
2. Step 2: Convert to fraction form
   1,376.10/1,898.69 = 934.43/x
3. Step 3: Cross multiply
   1,376.10x = 1,898.69 × 934.43
4. Step 4: Simplify right side
   1,376.10x = 1,774,178.73
5. Step 5: Solve for x
   x = 1,774,178.73/1,376.10
6. Step 6: Final answer
   x = 1,289.28