Finding the Fourth Proportional to 1,492.15, 2,059.20 and 902.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,492.15 : 2,059.20 = 902.35 : x
2. Step 2: Convert to fraction form
   1,492.15/2,059.20 = 902.35/x
3. Step 3: Cross multiply
   1,492.15x = 2,059.20 × 902.35
4. Step 4: Simplify right side
   1,492.15x = 1,858,108.82
5. Step 5: Solve for x
   x = 1,858,108.82/1,492.15
6. Step 6: Final answer
   x = 1,245.26