Finding the Fourth Proportional to 1,301.57, 1,953.45 and 522.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,301.57 : 1,953.45 = 522.12 : x
2. Step 2: Convert to fraction form
   1,301.57/1,953.45 = 522.12/x
3. Step 3: Cross multiply
   1,301.57x = 1,953.45 × 522.12
4. Step 4: Simplify right side
   1,301.57x = 1,019,935.31
5. Step 5: Solve for x
   x = 1,019,935.31/1,301.57
6. Step 6: Final answer
   x = 783.62