Finding the Fourth Proportional to 1,498.81, 2,068.38 and 869.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.81 : 2,068.38 = 869.39 : x
2. Step 2: Convert to fraction form
   1,498.81/2,068.38 = 869.39/x
3. Step 3: Cross multiply
   1,498.81x = 2,068.38 × 869.39
4. Step 4: Simplify right side
   1,498.81x = 1,798,228.89
5. Step 5: Solve for x
   x = 1,798,228.89/1,498.81
6. Step 6: Final answer
   x = 1,199.77