Finding the Fourth Proportional to 1,870.02, 2,580.39 and 1,072.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.02 : 2,580.39 = 1,072.98 : x
2. Step 2: Convert to fraction form
   1,870.02/2,580.39 = 1,072.98/x
3. Step 3: Cross multiply
   1,870.02x = 2,580.39 × 1,072.98
4. Step 4: Simplify right side
   1,870.02x = 2,768,706.86
5. Step 5: Solve for x
   x = 2,768,706.86/1,870.02
6. Step 6: Final answer
   x = 1,480.58