Finding the Fourth Proportional to 2,573.70, 3,551.72 and 1,394.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573.70 : 3,551.72 = 1,394.78 : x
2. Step 2: Convert to fraction form
   2,573.70/3,551.72 = 1,394.78/x
3. Step 3: Cross multiply
   2,573.70x = 3,551.72 × 1,394.78
4. Step 4: Simplify right side
   2,573.70x = 4,953,868.02
5. Step 5: Solve for x
   x = 4,953,868.02/2,573.70
6. Step 6: Final answer
   x = 1,924.80