Finding the Fourth Proportional to 1,870.08, 2,580.18 and 1,123.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.08 : 2,580.18 = 1,123.80 : x
2. Step 2: Convert to fraction form
   1,870.08/2,580.18 = 1,123.80/x
3. Step 3: Cross multiply
   1,870.08x = 2,580.18 × 1,123.80
4. Step 4: Simplify right side
   1,870.08x = 2,899,606.28
5. Step 5: Solve for x
   x = 2,899,606.28/1,870.08
6. Step 6: Final answer
   x = 1,550.53