Finding the Fourth Proportional to 3,090.61, 4,636.71 and 899.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,090.61 : 4,636.71 = 899.34 : x
2. Step 2: Convert to fraction form
   3,090.61/4,636.71 = 899.34/x
3. Step 3: Cross multiply
   3,090.61x = 4,636.71 × 899.34
4. Step 4: Simplify right side
   3,090.61x = 4,169,978.77
5. Step 5: Solve for x
   x = 4,169,978.77/3,090.61
6. Step 6: Final answer
   x = 1,349.24