Finding the Fourth Proportional to 1,598.50, 2,206.02 and 900.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,598.50 : 2,206.02 = 900.10 : x
2. Step 2: Convert to fraction form
   1,598.50/2,206.02 = 900.10/x
3. Step 3: Cross multiply
   1,598.50x = 2,206.02 × 900.10
4. Step 4: Simplify right side
   1,598.50x = 1,985,638.60
5. Step 5: Solve for x
   x = 1,985,638.60/1,598.50
6. Step 6: Final answer
   x = 1,242.19