Finding the Fourth Proportional to 1,602.72, 2,211.94 and 904.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,602.72 : 2,211.94 = 904.22 : x
2. Step 2: Convert to fraction form
   1,602.72/2,211.94 = 904.22/x
3. Step 3: Cross multiply
   1,602.72x = 2,211.94 × 904.22
4. Step 4: Simplify right side
   1,602.72x = 2,000,080.39
5. Step 5: Solve for x
   x = 2,000,080.39/1,602.72
6. Step 6: Final answer
   x = 1,247.93