Finding the Fourth Proportional to 2,053.60, 3,077.52 and 898.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,053.60 : 3,077.52 = 898.72 : x
2. Step 2: Convert to fraction form
   2,053.60/3,077.52 = 898.72/x
3. Step 3: Cross multiply
   2,053.60x = 3,077.52 × 898.72
4. Step 4: Simplify right side
   2,053.60x = 2,765,828.77
5. Step 5: Solve for x
   x = 2,765,828.77/2,053.60
6. Step 6: Final answer
   x = 1,346.82