Finding the Fourth Proportional to 1,342.23, 1,851.84 and 870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.23 : 1,851.84 = 870.50 : x
2. Step 2: Convert to fraction form
   1,342.23/1,851.84 = 870.50/x
3. Step 3: Cross multiply
   1,342.23x = 1,851.84 × 870.50
4. Step 4: Simplify right side
   1,342.23x = 1,612,026.72
5. Step 5: Solve for x
   x = 1,612,026.72/1,342.23
6. Step 6: Final answer
   x = 1,201.01