Finding the Fourth Proportional to 1,342.02, 1,851.37 and 869.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.02 : 1,851.37 = 869.99 : x
2. Step 2: Convert to fraction form
   1,342.02/1,851.37 = 869.99/x
3. Step 3: Cross multiply
   1,342.02x = 1,851.37 × 869.99
4. Step 4: Simplify right side
   1,342.02x = 1,610,681.40
5. Step 5: Solve for x
   x = 1,610,681.40/1,342.02
6. Step 6: Final answer
   x = 1,200.19