Finding the Fourth Proportional to 1,830.05, 2,525.45 and 990.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,830.05 : 2,525.45 = 990.74 : x
2. Step 2: Convert to fraction form
   1,830.05/2,525.45 = 990.74/x
3. Step 3: Cross multiply
   1,830.05x = 2,525.45 × 990.74
4. Step 4: Simplify right side
   1,830.05x = 2,502,061.80
5. Step 5: Solve for x
   x = 2,502,061.80/1,830.05
6. Step 6: Final answer
   x = 1,367.21