Finding the Fourth Proportional to 1,830.95, 2,526.72 and 991.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,830.95 : 2,526.72 = 991.67 : x
2. Step 2: Convert to fraction form
   1,830.95/2,526.72 = 991.67/x
3. Step 3: Cross multiply
   1,830.95x = 2,526.72 × 991.67
4. Step 4: Simplify right side
   1,830.95x = 2,505,672.42
5. Step 5: Solve for x
   x = 2,505,672.42/1,830.95
6. Step 6: Final answer
   x = 1,368.51