Finding the Fourth Proportional to 1,345.34, 1,856.50 and 903.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.34 : 1,856.50 = 903.18 : x
2. Step 2: Convert to fraction form
   1,345.34/1,856.50 = 903.18/x
3. Step 3: Cross multiply
   1,345.34x = 1,856.50 × 903.18
4. Step 4: Simplify right side
   1,345.34x = 1,676,753.67
5. Step 5: Solve for x
   x = 1,676,753.67/1,345.34
6. Step 6: Final answer
   x = 1,246.34