Finding the Fourth Proportional to 3,764.58, 5,645.48 and 1,298.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,764.58 : 5,645.48 = 1,298.72 : x
2. Step 2: Convert to fraction form
   3,764.58/5,645.48 = 1,298.72/x
3. Step 3: Cross multiply
   3,764.58x = 5,645.48 × 1,298.72
4. Step 4: Simplify right side
   3,764.58x = 7,331,897.79
5. Step 5: Solve for x
   x = 7,331,897.79/3,764.58
6. Step 6: Final answer
   x = 1,947.60