Finding the Fourth Proportional to 1,381.02, 1,905.81 and 751.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.02 : 1,905.81 = 751.55 : x
2. Step 2: Convert to fraction form
   1,381.02/1,905.81 = 751.55/x
3. Step 3: Cross multiply
   1,381.02x = 1,905.81 × 751.55
4. Step 4: Simplify right side
   1,381.02x = 1,432,308.75
5. Step 5: Solve for x
   x = 1,432,308.75/1,381.02
6. Step 6: Final answer
   x = 1,037.14