Finding the Fourth Proportional to 1,552.45, 2,141.52 and 1,021.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.45 : 2,141.52 = 1,021.43 : x
2. Step 2: Convert to fraction form
   1,552.45/2,141.52 = 1,021.43/x
3. Step 3: Cross multiply
   1,552.45x = 2,141.52 × 1,021.43
4. Step 4: Simplify right side
   1,552.45x = 2,187,412.77
5. Step 5: Solve for x
   x = 2,187,412.77/1,552.45
6. Step 6: Final answer
   x = 1,409.01