Finding the Fourth Proportional to 1,375.50, 1,897.35 and 903.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.50 : 1,897.35 = 903.45 : x
2. Step 2: Convert to fraction form
   1,375.50/1,897.35 = 903.45/x
3. Step 3: Cross multiply
   1,375.50x = 1,897.35 × 903.45
4. Step 4: Simplify right side
   1,375.50x = 1,714,160.86
5. Step 5: Solve for x
   x = 1,714,160.86/1,375.50
6. Step 6: Final answer
   x = 1,246.21