Finding the Fourth Proportional to 1,541.61, 2,313.69 and 1,021.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,541.61 : 2,313.69 = 1,021.50 : x
2. Step 2: Convert to fraction form
   1,541.61/2,313.69 = 1,021.50/x
3. Step 3: Cross multiply
   1,541.61x = 2,313.69 × 1,021.50
4. Step 4: Simplify right side
   1,541.61x = 2,363,434.34
5. Step 5: Solve for x
   x = 2,363,434.34/1,541.61
6. Step 6: Final answer
   x = 1,533.09