Finding the Fourth Proportional to 1,498.89, 2,068.49 and 869.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.89 : 2,068.49 = 869.45 : x
2. Step 2: Convert to fraction form
   1,498.89/2,068.49 = 869.45/x
3. Step 3: Cross multiply
   1,498.89x = 2,068.49 × 869.45
4. Step 4: Simplify right side
   1,498.89x = 1,798,448.63
5. Step 5: Solve for x
   x = 1,798,448.63/1,498.89
6. Step 6: Final answer
   x = 1,199.85