Finding the Fourth Proportional to 1,990.48, 2,746.88 and 1,106.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.48 : 2,746.88 = 1,106.30 : x
2. Step 2: Convert to fraction form
   1,990.48/2,746.88 = 1,106.30/x
3. Step 3: Cross multiply
   1,990.48x = 2,746.88 × 1,106.30
4. Step 4: Simplify right side
   1,990.48x = 3,038,873.34
5. Step 5: Solve for x
   x = 3,038,873.34/1,990.48
6. Step 6: Final answer
   x = 1,526.70