Finding the Fourth Proportional to 502,114, 692,978.76 and 290,146

Step by Step Solution

1. Step 1: Write the proportion equation
   502,114 : 692,978.76 = 290,146 : x
2. Step 2: Convert to fraction form
   502,114/692,978.76 = 290,146/x
3. Step 3: Cross multiply
   502,114x = 692,978.76 × 290,146
4. Step 4: Simplify right side
   502,114x = 201,065,015,298.96
5. Step 5: Solve for x
   x = 201,065,015,298.96/502,114
6. Step 6: Final answer
   x = 400,436.98