Finding the Fourth Proportional to 1,869.95, 2,580.76 and 1,123.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,869.95 : 2,580.76 = 1,123.94 : x
2. Step 2: Convert to fraction form
   1,869.95/2,580.76 = 1,123.94/x
3. Step 3: Cross multiply
   1,869.95x = 2,580.76 × 1,123.94
4. Step 4: Simplify right side
   1,869.95x = 2,900,627.25
5. Step 5: Solve for x
   x = 2,900,627.25/1,869.95
6. Step 6: Final answer
   x = 1,551.18