Finding the Fourth Proportional to 3,526.17, 5,286.15 and 1,333.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,526.17 : 5,286.15 = 1,333.30 : x
2. Step 2: Convert to fraction form
   3,526.17/5,286.15 = 1,333.30/x
3. Step 3: Cross multiply
   3,526.17x = 5,286.15 × 1,333.30
4. Step 4: Simplify right side
   3,526.17x = 7,048,010.58
5. Step 5: Solve for x
   x = 7,048,010.58/3,526.17
6. Step 6: Final answer
   x = 1,998.77