Finding the Fourth Proportional to 1,374.73, 1,899.72 and 1,042.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.73 : 1,899.72 = 1,042.56 : x
2. Step 2: Convert to fraction form
   1,374.73/1,899.72 = 1,042.56/x
3. Step 3: Cross multiply
   1,374.73x = 1,899.72 × 1,042.56
4. Step 4: Simplify right side
   1,374.73x = 1,980,572.08
5. Step 5: Solve for x
   x = 1,980,572.08/1,374.73
6. Step 6: Final answer
   x = 1,440.70