Finding the Fourth Proportional to 2,653.83, 3,980.61 and 898.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.83 : 3,980.61 = 898.16 : x
2. Step 2: Convert to fraction form
   2,653.83/3,980.61 = 898.16/x
3. Step 3: Cross multiply
   2,653.83x = 3,980.61 × 898.16
4. Step 4: Simplify right side
   2,653.83x = 3,575,204.77
5. Step 5: Solve for x
   x = 3,575,204.77/2,653.83
6. Step 6: Final answer
   x = 1,347.19