Finding the Fourth Proportional to 2,654.76, 3,980.74 and 899.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.76 : 3,980.74 = 899.16 : x
2. Step 2: Convert to fraction form
   2,654.76/3,980.74 = 899.16/x
3. Step 3: Cross multiply
   2,654.76x = 3,980.74 × 899.16
4. Step 4: Simplify right side
   2,654.76x = 3,579,322.18
5. Step 5: Solve for x
   x = 3,579,322.18/2,654.76
6. Step 6: Final answer
   x = 1,348.27