Finding the Fourth Proportional to 1,174, 1,621.71 and 1,090.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174 : 1,621.71 = 1,090.98 : x
2. Step 2: Convert to fraction form
   1,174/1,621.71 = 1,090.98/x
3. Step 3: Cross multiply
   1,174x = 1,621.71 × 1,090.98
4. Step 4: Simplify right side
   1,174x = 1,769,239.61
5. Step 5: Solve for x
   x = 1,769,239.61/1,174
6. Step 6: Final answer
   x = 1,507.02