Finding the Fourth Proportional to 1,877.15, 2,588.72 and 1,406.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,877.15 : 2,588.72 = 1,406.18 : x
2. Step 2: Convert to fraction form
   1,877.15/2,588.72 = 1,406.18/x
3. Step 3: Cross multiply
   1,877.15x = 2,588.72 × 1,406.18
4. Step 4: Simplify right side
   1,877.15x = 3,640,186.32
5. Step 5: Solve for x
   x = 3,640,186.32/1,877.15
6. Step 6: Final answer
   x = 1,939.21