Finding the Fourth Proportional to 1,060.86, 1,463.72 and 641.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.86 : 1,463.72 = 641.10 : x
2. Step 2: Convert to fraction form
   1,060.86/1,463.72 = 641.10/x
3. Step 3: Cross multiply
   1,060.86x = 1,463.72 × 641.10
4. Step 4: Simplify right side
   1,060.86x = 938,390.89
5. Step 5: Solve for x
   x = 938,390.89/1,060.86
6. Step 6: Final answer
   x = 884.56