Finding the Fourth Proportional to 1,374.18, 1,897.03 and 784.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.18 : 1,897.03 = 784.60 : x
2. Step 2: Convert to fraction form
   1,374.18/1,897.03 = 784.60/x
3. Step 3: Cross multiply
   1,374.18x = 1,897.03 × 784.60
4. Step 4: Simplify right side
   1,374.18x = 1,488,405.82
5. Step 5: Solve for x
   x = 1,488,405.82/1,374.18
6. Step 6: Final answer
   x = 1,083.12