Finding the Fourth Proportional to 1,097.02, 1,642.56 and 899.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.02 : 1,642.56 = 899.92 : x
2. Step 2: Convert to fraction form
   1,097.02/1,642.56 = 899.92/x
3. Step 3: Cross multiply
   1,097.02x = 1,642.56 × 899.92
4. Step 4: Simplify right side
   1,097.02x = 1,478,172.60
5. Step 5: Solve for x
   x = 1,478,172.60/1,097.02
6. Step 6: Final answer
   x = 1,347.44