Finding the Fourth Proportional to 2,019.86, 3,031.31 and 924.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.86 : 3,031.31 = 924.99 : x
2. Step 2: Convert to fraction form
   2,019.86/3,031.31 = 924.99/x
3. Step 3: Cross multiply
   2,019.86x = 3,031.31 × 924.99
4. Step 4: Simplify right side
   2,019.86x = 2,803,926.81
5. Step 5: Solve for x
   x = 2,803,926.81/2,019.86
6. Step 6: Final answer
   x = 1,388.18