Finding the Fourth Proportional to 1,377.55, 1,900.59 and 845.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.55 : 1,900.59 = 845.88 : x
2. Step 2: Convert to fraction form
   1,377.55/1,900.59 = 845.88/x
3. Step 3: Cross multiply
   1,377.55x = 1,900.59 × 845.88
4. Step 4: Simplify right side
   1,377.55x = 1,607,671.07
5. Step 5: Solve for x
   x = 1,607,671.07/1,377.55
6. Step 6: Final answer
   x = 1,167.05