Finding the Fourth Proportional to 1,877.45, 2,590.72 and 1,038.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,877.45 : 2,590.72 = 1,038.15 : x
2. Step 2: Convert to fraction form
   1,877.45/2,590.72 = 1,038.15/x
3. Step 3: Cross multiply
   1,877.45x = 2,590.72 × 1,038.15
4. Step 4: Simplify right side
   1,877.45x = 2,689,553.37
5. Step 5: Solve for x
   x = 2,689,553.37/1,877.45
6. Step 6: Final answer
   x = 1,432.56