Finding the Fourth Proportional to 1,398.42, 2,084.77 and 1,332.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398.42 : 2,084.77 = 1,332.82 : x
2. Step 2: Convert to fraction form
   1,398.42/2,084.77 = 1,332.82/x
3. Step 3: Cross multiply
   1,398.42x = 2,084.77 × 1,332.82
4. Step 4: Simplify right side
   1,398.42x = 2,778,623.15
5. Step 5: Solve for x
   x = 2,778,623.15/1,398.42
6. Step 6: Final answer
   x = 1,986.97