Finding the Fourth Proportional to 1,342.82, 1,851.39 and 869.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.82 : 1,851.39 = 869.93 : x
2. Step 2: Convert to fraction form
   1,342.82/1,851.39 = 869.93/x
3. Step 3: Cross multiply
   1,342.82x = 1,851.39 × 869.93
4. Step 4: Simplify right side
   1,342.82x = 1,610,579.70
5. Step 5: Solve for x
   x = 1,610,579.70/1,342.82
6. Step 6: Final answer
   x = 1,199.40