Finding the Fourth Proportional to 2,552.07, 3,826.29 and 990.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,552.07 : 3,826.29 = 990.76 : x
2. Step 2: Convert to fraction form
   2,552.07/3,826.29 = 990.76/x
3. Step 3: Cross multiply
   2,552.07x = 3,826.29 × 990.76
4. Step 4: Simplify right side
   2,552.07x = 3,790,926.34
5. Step 5: Solve for x
   x = 3,790,926.34/2,552.07
6. Step 6: Final answer
   x = 1,485.43