Finding the Fourth Proportional to 1,870.61, 2,800.48 and 1,088.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.61 : 2,800.48 = 1,088.22 : x
2. Step 2: Convert to fraction form
   1,870.61/2,800.48 = 1,088.22/x
3. Step 3: Cross multiply
   1,870.61x = 2,800.48 × 1,088.22
4. Step 4: Simplify right side
   1,870.61x = 3,047,538.35
5. Step 5: Solve for x
   x = 3,047,538.35/1,870.61
6. Step 6: Final answer
   x = 1,629.17