Finding the Fourth Proportional to 1,816.99, 2,507.36 and 1,031.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,816.99 : 2,507.36 = 1,031.00 : x
2. Step 2: Convert to fraction form
   1,816.99/2,507.36 = 1,031.00/x
3. Step 3: Cross multiply
   1,816.99x = 2,507.36 × 1,031.00
4. Step 4: Simplify right side
   1,816.99x = 2,585,070.47
5. Step 5: Solve for x
   x = 2,585,070.47/1,816.99
6. Step 6: Final answer
   x = 1,422.72