Finding the Fourth Proportional to 1,377.37, 1,901.27 and 1,006.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.37 : 1,901.27 = 1,006.25 : x
2. Step 2: Convert to fraction form
   1,377.37/1,901.27 = 1,006.25/x
3. Step 3: Cross multiply
   1,377.37x = 1,901.27 × 1,006.25
4. Step 4: Simplify right side
   1,377.37x = 1,913,160.21
5. Step 5: Solve for x
   x = 1,913,160.21/1,377.37
6. Step 6: Final answer
   x = 1,389.00