Finding the Fourth Proportional to 1,111.63, 1,534.06 and 607.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.63 : 1,534.06 = 607.49 : x
2. Step 2: Convert to fraction form
   1,111.63/1,534.06 = 607.49/x
3. Step 3: Cross multiply
   1,111.63x = 1,534.06 × 607.49
4. Step 4: Simplify right side
   1,111.63x = 931,925.85
5. Step 5: Solve for x
   x = 931,925.85/1,111.63
6. Step 6: Final answer
   x = 838.34