Finding the Fourth Proportional to 1,877.16, 2,590.58 and 1,131.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,877.16 : 2,590.58 = 1,131.42 : x
2. Step 2: Convert to fraction form
   1,877.16/2,590.58 = 1,131.42/x
3. Step 3: Cross multiply
   1,877.16x = 2,590.58 × 1,131.42
4. Step 4: Simplify right side
   1,877.16x = 2,931,034.02
5. Step 5: Solve for x
   x = 2,931,034.02/1,877.16
6. Step 6: Final answer
   x = 1,561.42