Finding the Fourth Proportional to 1,360.71, 2,039.56 and 898.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.71 : 2,039.56 = 898.79 : x
2. Step 2: Convert to fraction form
   1,360.71/2,039.56 = 898.79/x
3. Step 3: Cross multiply
   1,360.71x = 2,039.56 × 898.79
4. Step 4: Simplify right side
   1,360.71x = 1,833,123.69
5. Step 5: Solve for x
   x = 1,833,123.69/1,360.71
6. Step 6: Final answer
   x = 1,347.18