Finding the Fourth Proportional to 3,931.61, 5,897.39 and 1,009.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.61 : 5,897.39 = 1,009.91 : x
2. Step 2: Convert to fraction form
   3,931.61/5,897.39 = 1,009.91/x
3. Step 3: Cross multiply
   3,931.61x = 5,897.39 × 1,009.91
4. Step 4: Simplify right side
   3,931.61x = 5,955,842.83
5. Step 5: Solve for x
   x = 5,955,842.83/3,931.61
6. Step 6: Final answer
   x = 1,514.86