Finding the Fourth Proportional to 1,253.46, 1,876.89 and 1,057.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.46 : 1,876.89 = 1,057.98 : x
2. Step 2: Convert to fraction form
   1,253.46/1,876.89 = 1,057.98/x
3. Step 3: Cross multiply
   1,253.46x = 1,876.89 × 1,057.98
4. Step 4: Simplify right side
   1,253.46x = 1,985,712.08
5. Step 5: Solve for x
   x = 1,985,712.08/1,253.46
6. Step 6: Final answer
   x = 1,584.18